Good luck. Hi everyone All that ever happened is, they died. I’m sure your poinsettia would prefer that anyway! Environmental factors such as warm, dry conditions are most often the reason for leaf drop. If you don’t put the plant somewhere for 14 hours where there is NO light, than you might not get red leaves. I had my own landscaping business in a former life and still do yards for friends/family and our condo complex; a block of green I get to toil in regularly. If the bracts aren’t needed or a burden they’ll drop off on their own. Mushroom compost is, in my opinion, one of the most over-hyped gardening products on garden shop shelves Let’s examine the data. However, you won’t hurt it to try starting the cycle now and when you’re ready to bring it out for display, although it may not be as red as you’d like, it should show some signs of color at least with 7 weeks or so to go. But you could safely cut it back about 1/3 or 1/2 after the risk of frost is gone this spring when you move it outside during the warm months. May the light green is better and its not getting enough light? IT HAS MULTIPLIED IN SIZE AND IS VERY GREEN. Thank you for the answer to my question. There are about 20 stems on this plant and they are all very leafy and healthy, but only ONE red leaf per stem. The only other thing I can suggest, and you’re likely already doing this, is to make sure they are getting plenty of darkness through the night time. It has been kept wrapped too long. I am so excited! Add a light amount of fertilizer in the spring and summer. Advice please It’s still a pretty plant even with green leaves but not so much with a few stems and a couple leaves. While an overhead florescent light should work, a sunny, south-facing widow would be ideal if you plan to have it live indoors all year. Living in Florida is too late to trim these? These colored leaves only appear during days with the shortest daylight hours. I’ve always found that in order to increase leaf size, you need to place it in a spot where it gets slightly less sun than it needs. Mine is starting to turn red so I will a beautiful red plant for Valentine’s day! No direct sunlight. The plant needs light each day and complete darkness at night. Continue to cover at least one and not the day to day changes between it and the uncovered plants. That's natural. Water and medium shade (and keep out of direct afternoon sun) are key until it recovers over a week to 10 days at least. We live in the Pac NW and only have about 5 hrs of dark right now, so moving it to somewhere darker in a few months will do the trick? We’re all learning here and you could make a valuable contribution to what we don’t know…yet. My kind of a plant! Use a closet or place a dark bag over the plant. Also, you’ll need to keep it watered as indoor environments can be very dry. These plants are in the same location every year when I bring them in. If you are digging up from the ground, I’d repot after summer and with enough time before you bring it back inside, so that it has time to acclimate to its new home in a pot. Then, bring them back in, in the Fall, when the temps are 59 at night. I commend folks who place a box over their poinsettias every night to force the leaves to turn red. My plant started showing red veins after 3 days utilizing this process so I know it works. Why do poinsettias turn yellow? It derives its common English name from Joel Roberts Poinsett, the first United States Minister to Mexico, who is credited with introducing the plant to the US in the 1820s. I didn’t know that I had to keep it in total darkness starting in October. Here is a link with information about caring for our poinsettia. I didn’t know I should trim them and last year they both came into full color. it will cook your plant. It’s a perennial problem that I thought would have been conquered by today’s plant breeding techniques; however, this has not been achieved yet. Joe Lamp'l is the Host and Executive Producer of the award winning PBS television series Growing A Greener World. It is indeed a lot of work to turn the leaves red. You’ve likely heard the expression; “if it isn’t broke, don’t fix it”. Another possibility is that it is getting too much dry heat from the location in the house. Temperature. Select those branches that will go around to form into a rounded tree. Don’t worry about the limp leaves. Donât let it dry out, but donât water until the soil is sopping wet either. Can I leave the plant in the closet 24 hours. I am obviously doing something right, but I don’t want to destroy all my hard work, by cutting it back, which it should have done in march. Bring it out again in the morning. I’m very curious to know how this works out so please get back to me on the outcome! I’m looking forward to this challenge (and bragging rights!). Pick a slightly bigger pot, tease out the roots to break up any circular pattern, and freshen up the soil. Celebrate the fact that your plant is growing tremendously. Once the flowers are gone, the leaf bracts fall off. I’m afraid you are pushing the limits here beyond a successful effort to turn leaves red. Happy gardening! But if you want to have a high chance of success, that’s what you need to do. John, the leaf size is a product of what the plant can support based on its environmental conditions. Its been 2 weeks since i moved it to larger pot. I WANTED TO KNOW SINCE I CANT MOVE IT SOMEWHERE FOR TOTAL DARKNESS.IS PUTTING A BOX OVER IT CAN THAT HELP ME OUT HERE WITH SOME HOLES MABYE. I’d try it Jennifer. I didn’t cut mine back. When we sold the house in 2003, the base of the plant was 11″ in diameter and it was 6 feet tall. This is a popular question and it sounds like you have come up with a If you are looking for a bit more red at that point, try going a little longer with the darkness. I have 10 poinsettias planted in front of my house. Perhaps a reader will offer suggestions on how to make this happen. They have new growth shoots approx 4 inches high shooting above the white bracts. It’s in a clay pot, that I think it’s time to get it a large pot. My guess is they will, just like poinsettias out in their native Mexico. if i begin the dark cycles in october, would they still turn red by winter? Unlike a maple tree for example, Poinsettias need the darkness in order for the leaves to turn. I just kept watering it. By Joe Lamp'l. Happy Thanksgiving! Or should I continue covering them for 3 more weeks? The bracts on the poinsettia plant need a little help to return to their original red color year after year. Otherwise, they’ll stay green. 2) Can I completely block the light for 4 weeks? It’s inside by the door to my office and it’s in a window. Hi Brian. At this point, I don’t think you would have enough time to achieve red leaves before Christmas if you started providing the right combination of light and dark. Today they are HUGE and full of leaves. How Are Mushrooms Grown They’re grown on compost made specifically for this purpose.This compost is made by mushroom producers from material such as hay, straw, corn cobs poultry and horse manure Or any combination […] Also, once they’re fully red, can you break the cycle? Poinsettias (Euphorbia pulcherrima) need total darkness, for 14 hours each day, starting about eight weeks before you want to display them. I honestly don’t know Joe if that little light is making the difference. You plant is trying to compensate for lower light levels. Hi Brendan. I have a basement. So should I keep the plant on the window where it’s sunniest indoors and just continue the regime when I return from holiday or keep it in the dark the whole time I’m away? So are yellow leaves on poinsettia caused by too much or too little water? Please keep us posted. When youâre dealing with a poinsettia with yellow leaves, over or under watering are the most likely culprits simply because theyâre so easy to get wrong. did you follow the guidelines for the light/dark timing? . I’m afraid I don’t have a good suggestion for you by leaving it outside. But at this point you could keep the experiment going to find out, and then you can let us all know, or settle for what you have now. I water it every 4-6 days. The window is pretty cold in the winter and they virtually bake in it in the summer. There is some light down there. The branches you want to keep should be spread evenly around the tree to make it look round and nice. I thought the red would start showing in about 4 weeks, not 3 days! The plant needs time to reproduce new growth. What am I doing wrong? Eventually the roots become so tightly encircled that they lose their ability to take up water and nutrients and the plant eventually begins to decline. Poinsettias come in a range of colors from white to orange, but are most popular in their red variety. My question, if I keep repotting them, will they just get bigger? You may also want to assess where you plant is located. John. . As for turning new leaves red again, following the guide in the article should do the trick. Just waiting to put in the dark. Is there any way to make leaves big? Advice? To correct the problem, you would need to break up the root pattern and repot in a slightly larger container. I had a tiny one last Christmas in the office and eventually all the leaves dropped off. After New Year, I put them in a big bay window to die, as I am not good with plants, nor did I care to have such a responsibility. Pinched back in July. Mark, I just wanted to say I was so impressed by all the answers. Bought a new pot and brought it back into the office where it sits on a windowsill, and it has gone bananas! Sounds like you have the perfect house plants. Causes of Poinsettia Leaves Curling I would leave the plant uncovered and start again when you return from your trip. I am not too great at pruning, the hours I work prevent me from doing the light dark routine. I think that the closet is dark, but it’s possible that a little light gets in there under the door. I live in San Francisco and my bay window faces south. It winters in the cool guest room with generally only natural light. Celebrate your success or good fortune, and know that many people reading this will be jealous! Joe, I’ve been covering my plant for about 3 weeks now. I am really confused by this thing. I’m going on holiday for just a week but am not sure if my poinsettia plant is going to be ok whilst I’m away? LORI, DID EVERYTHING WORK OUT????? I would love it if you would find a way to block the light and keep the experiment going. What Is Molybdenum: Information On Molybdenum Sources For Plants, Types Of Poinsettia Plants: Choosing Different Poinsettia Varieties, Poinsettia Care Following Christmas: What To Do With Poinsettias After Holidays, Giving To Food Deserts â How To Donate To Food Deserts, December To-Do List â What To Do In December Gardens, Farm Share Gift Ideas â Giving A CSA Box To Others In Need, What Is Gummosis: Tips On Gummosis Prevention And Treatment, Companion Planting With Borage â Plants That Grow Well With Borage, Non-Blooming Agapanthus Plants â Reasons For Agapanthus Not Flowering, Transplanting Poinsettia Plants: Can You Transplant Poinsettias Outside, Recipes From The Garden: Pressure Cooking Root Vegetables, Gratitude For The Garden â Being Grateful For Each Growing Season, 7 Reasons To Do Your Garden Shopping Locally, Thankful Beyond Words â What Represents Gratefulness In My Garden. Water when the plant becomes dry. During this time you should remove any little branches that grow around them. I have 3 poinsettias in my office from last Christmas season. I did it for two weeks or so but saw nothing. I have the plant at my work. At this point, there are a lot of red leaves and the new leaves coming in are red. I’d say enjoy it as is and tackle this project with a smaller plant in October. (early, not sure when you started the dark light program?) If you have a closet and can block off light from getting in at the top, sides or bottom this should probably work. I always say that plants don’t read the books! Hi, I have a three year old poinsettia that has never been trimmed, puned, or pinched. But, I can have a red plant for Valentine’s day! No air and high heat is not good for your poinsettia. never bloomed again but it sure grew big! Since our winter is so cold this year, I just relocated them temporarily, away from the window, as their leaves were curling a bit. plz do let me know.. Ive had a happy Poinsettia since last Christmas. I’m keeping it in a room that stays around 45 to 55 degrees. At what point do we stop providing 14 hours of total darkness? I broke the process once by not putting it in on time. I have procrastinated on learning how to get the leaves red again, and bummed that they won’t be red for christmas. Eventually the leaves will start to drop off. AS A GIFT I RECIEVED A BIG PIONSETTAS PLANT BEAUTIFUL! I never trimed it and I didn’t know you could plant it out side. Ever since I went to visit a friend in an old, really old apartment building and saw a giant poinsettia tree in the lobby looking all striking and weird, I’ve wanted to have my own weirdness. In the open, this … I’m giving the 14/10 method a go this year. But if this is your only option you should def. That’s your biggest risk of leaving them outdoors at night. However, cold drafts, allowing the leaves to touch a cold window, or more importantly, lack of decent light, can injure the leaves and cause premature leaf drop. So it will get bright light for the required time then go off to resume the total darkness stage. I too started my attempts at turning a poinsettia in an office setting. I TRYED DOING THIS ONE OTHER TIME AND IT DID THE SAME THING WHAT AM I DOING WRONT??? https://www.growingagreenerworld.com/turning-poinsettias-red-again/. Just keep it happy as you have been doing and try again next year. Havertown, PA. Hmmm, sounds like you’re on the right track. Ian so excited that I have kept my poinsettia alive from last christmas! The poinsettia is a commercially important plant species of the diverse spurge family. Am I understanding that I should prune it all the way back (in this case) to were there are no leaves left? It will make such a great comparison and learning opportunity. So I will continue leaving it in front of the windows as its the only time I have ever had a poinsetta live let alone change color. I’ve always considered myself to have a black thumb so I’m scared to mess with it since doing nothing so far has made it seemingly happy. What would be your advise in terms of pruning while the bracts are still present and should I pop them outside for the summer (Dublin temps are 12 to 20degrees centigrade). Yay Paulette! It gets dark in my living room so I didn’t move it. Yes, please do keep us posted. Your poinsettia with yellow leaves could be caused by a mineral deficiency â a lack of magnesium or molybdenum could turn leaves yellow. The green bag will block the green light waves and would make the plant turn red to try and find other light waves to use (is what I am thinking). Hi Joe, Hi. And, to ensure light doesn’t accidentally get it, hubby has offered to make some stakes to keep the cardboard in place (we live in a canyon with winds and critters). This in spite of the fact that it hasn’t been covered at night or anything… in over three months! I am so happy. i’m thinking the plastic will help keep the humidity as well. I just need to move this to somewhere darker in about August so they will turn Red again? Hi Joe. Q I have a large poinsettia with plenty of fresh green leaves. Thank you. If you think your plant has the right amount of water, though, there are some other possible causes. Since it is now almost November, is there any way I can get the foilage to turn red? I wonder if they’ll adjust and behave for the holidays. You need a good head start. I don’t let the plant get leggy, but by trimming about 1/3 of the leaves, and placing it in partial shade usually results in larger leaves. This may be a dumb question but how long to you keep up the black out cycle? I don’t know if moonlight will hinder your plants from turning red. Ro, And I have success! My plant has been in full sun for all these years. The right amount of light each day is part of the formula Laura. Also if I plant such a large plant in the ground, will it make it throught the winters or will it die? Also, if you transplant and cut back, keep it out of all day direct sun for a couple weeks. But sometimes they don’t, so that’s where the intervention comes in by trying to simulate ideal conditions. Once it warms up where you live, prune back the broken leaves in early spring and let nature take its course. Plants eventually become “pot bound” or “root bound” when confined to the same container as the plant grows. Will it still have enough time to regrow for the summer and fall so I get blooms in December? Hi Hey Alex. I am covering poinsettia daily with cardboard box. Please let us know and share more details about the environment where they’re planted. My poinsettia got too cold because I walked across the street with it in 20 degree weather. The leaves are getting very ratty and now when it loses leaves none grow back. The oldest one has turned first, now the 2 year old one is turning, and I just noticed the stems turning red on the one year old plant. i wanted bigger leaves so i’ve added miracle-gro indoor plant food spikes ( 6% nitrogen and 12% phosphate). This is such a wonderful option for those of us who hate to throw away healthy plants only because they won’t “rebloom.”. Here it is 10 months later and my poinsettia is healthy green and vibrant. yes Betty. I can’t say for sure but I have my doubts that florescent lights are bright enough to fully replace the sunlight. Infected plant material is probably the most important source of contamination; the bacteria can survive in dried leaves for as long as a year and they can reside on the foliage for several months before initiating disease. Nothing out of the ordinary, that is, until this year! I got a huge poinsettia from my neighbor, the question I have is if I kept it in the house all year would it continue to grow? I would not be worried about the humidity. The plant liked it, though. I was wondering how are some people able to keep their poinsettias red even after winter? I’ll let you decide that. Hi Alise. Most of them are red but some of them are white. How do I get its leaves to turn red for Christmas? Perfect size to go over the plant! That’s a lot of growth if less than one year. Bold and beautiful, the poinsettia plant (Euphorbia pulcherrima) has bright petals that contain small flowers of green and yellow at the center. Thanks for your help. Cheers! My first choice at this point is to leave it alone (but keep doing what you’re doing) if you are keeping it indoors. Thought I’d killed it but eventually it started sprouting again. Pruning a poinsettia removes its faded bracts, making room for next year's colorful show, and... Transplanting to a Larger Pot. How to Make a Poinsettia's Leaves Turn Red Pruning a Poinsettia. Best of luck. Can I use a winter shrub cover to make my poinsettia bloom? I would leave it in bright light while you are away and resume the 14-10 rotation when you return. Congratulations on keeping your poinsettia alive. Keep reading to learn what might lead to a poinsettia getting yellow leaves and how to treat yellow leaves on poinsettia plants. . Thanks for the nice words. EXPERTS. Is there any way to halt or slow the process or is it now too late for this season? Poinsettia infestation is usually present when you purchase the plant, so the most important thing is to examine the plant closely before you purchase and bring it home. Yes, you should cut it back to a height of 4 to 6.” https://www.growingagreenerworld.com/restoring-a-poinsettia-to-its-christmas-color/ . My plant has about 5 stems and lots of new green leaves are budding already, all I have done is water it. I am very new to plants in general. Lesions on leaves and bracts appear as … Good luck Chris. I re-potted it in spring and fertilized it once. This can result in leaves gradually turning yellow before falling off. I’m SO impressed with myself, I’ve never managed this with a plant (except a spider plant but a toddler could grow those!). Usually, it’s the lower leaves that are sacrificed first. Depending on your zone, you want to wait to take your poinsettia back outside until the fear of frost is past and the daytime temperatures are 70 degrees F or warmer, with night temperatures not dropping below 50 degrees F. If the ground temperatures are ok and you have moved your plant outside but there is a cold snap, cover the plant with a blanket and then uncover it the next day before the sun heats up too much. Thanks Melvin. However, if you added the fertilizer after the browning curled leaves, it was that the soil was too dry. Another reason to avoid direct sunlight is that it may become too hot for the plant. Come next October, start the whole process over again! Is this normal? Yes, this will be more than is advised, but my hunch is that this will be ok for 2 days per week. When you don’t have optimum light and heating arrangements you sometimes just watch the thing and say, “grow or die, sucka!” Maybe next Christmas I’ll try the 14-10 method. But I plan to keep going until the end if December. I’ve not heard of this happening like this so quickly Heidi. I’m going to try this 14/10 thing this year. Or should I just leave it as is? I’m not sure where you live but I think you will have time if you prune your poinsettias now. Although poinsettias like it warm, being wrapped in plastic outdoors, even in cool climates can kill your plant. Can I still put them in a closet? This plant might just need a makeover above and below ground. Also, make sure you are fertilizing it, especially if it’s still in a pot. I put the plant in a dark closest that is not used with a black plastic bag. The weekend conundrum with your plant being at work will disrupt the light / dark cycle. Losing leaves could be because of too much water or not enough. I truly love this plant, every day in the light and seeing the red, brings a new view. All I do is water it and feed it normal plant food. My question: I’m afraid I’ll forget my plant if I have to move it to a dark spot every day and then move it back to light. Ask at your grocery store, the box is what they pack cartons of eggs in. I have now placed pot on a bed of pebbles which has a small amount of water, not touching the bottom of the pot I hasten to add. Sorry for all the errors! I’m a newbie to caring for and reblooming poinsettias. I moved her back to a corner spot in my living room as it was too sunny & I thought that’s why it was wilting, she seems to be losing the leafs again also! My concern is that if you try, and then when it’s time to remove the tape, I think it’s very likely it will damage the leaves. very workable solution worth sharing with others looking for ways to get their poinsettias to rebloom. Any ideas/tips?! Thanks Paul and I’m rooting for you! The plant is rather large and seems very healthy, losing a few leaves now and then just as it has done all year. Several barely survived the pressure washing company’s strong chemicals. My question is – can I leave it in the dark for 48 hours (over the weekend?) Thank you for all of your wonderful work and advice. Fuzail, so if you’re after the fullest plant, I would allow the new shoots to come on as well so you have more branching and leaves that will turn red in time for Christmas. Hi my name is brittany and i have a poinseta i got him December 2012 he is now 3 years old i had to repot him 3 different times in the last 3 years he has a tree root and early 2013 he died completely but i brought him back from the dead now hes 3 years old and still growing and living i never gave up on him. My hubby’s sister had one for several years, it. Maybe if you use that easy-to-remove painters tape. My leaves are turning a light green color. You’ll need to keep it indoors in a sunny spot until after the risk of frost has passed for your area. Poinsettias (Euphorbia pulcherrima) need total darkness, for 14 hours each day, starting about eight weeks before you want to display them. Hi Joe – really useful, clear advice, thanks! https://www.growingagreenerworld.com/turning-poinsettias-red-again/. I have never pruned them, but reading all this advice, maybe I should. Even a little light can affect the desired outcome. I there an explanation as to why I have poinsettias turning red….on their own????? I’m curious to know if there is any color change with no intervention by you at all. I live in eastern Tennessee. You can keep it as a houseplant if you provide it sufficient light. Wow, this thing is bright bright red and rocking! To keep the poinsettia in bloom as long as possible, maintain a temperature of 65 to 75 F during the day. Put in dark closet, inside bathroom w no windows etc. I live in Orange County, California, so I’m assuming that’s why they have done this well with little attention. Maybe your plant isn’t getting 14 hours of TOTAL darkness. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. There should be no signs of wilting or drooping and no fallen or yellowed leaves. I followed Joe’s article and got red leaves last year by Christmas. In all, I put it in the closet every night for about seven weeks without seeing a leaf change at all- only the stems turned red. Do I continue with the no light treatment for more red? I tried putting some used coffee grounds on it and then realized – chocolate flavored coffee grounds make your house smell like chocolate for a week. Follow Joe on Twitter. Not only has it still got red flowers , the leaves have also not dropped. Poinsettia plants are susceptible to a number of infestations, but are most prone to whitefly. However, it’s the end of October first of November and some are very leggy. I’ve had my poinsettias a LONG time and they rarely EVER turn red. Yes. Adding too much and the result is fertilizer burn. I have three poinsettias: a 1 year old, a 2 year old, and a 3 year old. Thanks Melvin. Poinsettia leaves turning yellow can be caused by quite a few things, but the most likely source of the problem is water. Unfortunately I had to be away for conferences and meetings 4 times and so the treatment was not consistent. While I know not everyone has a garden she’d this is what’s working for me ..I set my pot on a bench in the shed in front of a window and place a brown paper sack over it for darkness and remove it the next day . Should I cut the whole thing back to four to six inches and start over or just let it go the way it is? In mid-October, I moved my poinsettia’s from an outdoor patio to an unused bathroom which gets no light in the evening. I started in October with putting a big black thrash bag over my plants for 12 hours and giving them sun during the days. Remove it from its existing pot and check the roots. Poinsettia are very cold tender (which is kind of funny when you consider it is a "Christmas" plant). My grandparents built there house in San Clemente CA back in 1951. She had it in the house all the time! Depending on where you have the plant (planted outside, or in a pot indoors), will determine how you approach this process. This has being going on for at least 4 weeks or more. (Many have been red for a week or two; others are their usual color.) I have had them for about three or four years now. Choose a healthy-looking plant. So I hope you will try this and let us know what you learn. Yes, you could buy a plant for a few bucks and have all the red you want. Thank you. Eventually, the green leaves fall, too. These salts can burn the roots, discolor the leaves, and cause new growth to be small. Im a little unclear about the pruning process. I can’t explain why it didn’t work, but I love the fact that you tried and then took the time to share your experience with us! And you may never need to prune them if you’re happy with the size and shape. My four year old poinsettia blooms all summer, brightening up the deck in Maine with small but very intensely red bracts. Have I understood correctly that after the red blooms fall off, I am to cut each stem down a bit? it lost most of it’s leaves during winter, i’ve cut it once probably around March. Anyway, I am going to try to get it to bloom red for this Christmas. How important is humidity during the dark process? Thanks. Happy Gardening! You are a person after my own heart. -Kimberly Crawford. Not sure if this is better or worse. I cannot explain the why behind it, but like with most things with plants and gardening, there are ALWAYS exceptions to the rule. It’s important to pinpoint the possible cause in the event that your poinsettia plant leaves are falling off, as in some cases, this can be easily fixed. But if there is too much ambient light throughout the night, it could impact your results. Will this prevent it from turning red. Hope this information helps. Put it outside in the spring, wasn’t happy with the cool air and direct sun, lost all it’s leaves. I manage to keep my poinsettia alive since December. Lessee, that was 2008 and I have tried many times to propagate the thing, each effort either getting squashed by a falling box in a move or just “failing to thrive”. However, a diluted dose of liquid fertilizer every couple of weeks wouldn’t hurt for overall health, but don’t do it to try and boost the leaf size. I’m inclined to say just keep doing what you’re doing–especially since you say new shoots are growing all over. Each was purchased at a different store a year apart. is this normal? Then make sure it gets plenty of bright light on Monday morning. It is particularly well known for its red and green foliage and is widely used in Christmas floral displays. It’s called ramification, and each time you ramify, in theory the leaves should reduce to about half their previous size (In theory). During the spring and summer you can keep it outside after the fear of frost has passed and temperatures at night are 50 degrees or warmer. Hi Chris. My experience is that once the leaves have turned red, you can put them out in full light. The plant has grown over the summer on the porch and I am ready to start the process again. Happy gardening. Good luck! HEY JOE , Then, if the cause of stress isn’t corrected, the leaf drop will gradually progress up the plant until it appears nearly naked, with only the colored bracts and a few green leaves on the top. For instance, Pink Knotweed , they say, doesn’t like direct sun light. But I wouldn’t worry about pruning them yet. I have just started the process of placing my poinsettia under a cardboard box for 14 hours each night in order to encourage it to bloom. But it is not cold-hardy for Tennessee. I just keep it where it is and watered normally and gave it fertilizer in late August. The Poinsettia Leaves Are Curling & Turning Yellow Light. But once it is, you’re good to go through and beyond the holidays. It is fine to cut back some of the stems Jamie. Let us know what happens. Is it safe to cut it back to about half its current size, leaving only a few stems with leaves? Hi Kimberly. Most of the leaves are green with the exception of the topmost few which are smaller and red or white repectivly. I’ve read most of the comments; but my question is when is the best time of year to repot a poinsettia? Thanks Joe, great advice re the cardboard! There are new shoots of the plants growing and the new leaves are all green. It should put on plenty of new growth once it warms up. When you say the plant needs a humid environment during the day, can I put it on a window sill in a centrally heated room. Thank you! Until then, keep in next to a sunny window and check soil moisture every few days and water lightly. I didn’t pay much attention, but a few weeks later the plant now has many fewer leaves but four of the sets of leaves nearest the window have turned red! I did none so far and it is looking like a little tree now, with no leaves on the bottom ten inches or so of stalks. I have to have the oddest Poinsettia. I did not prune them throughout the year because I did not anticipate leaving them in all year, but by September, the plants were huge (about 3 feet wide and 3 feet tall). You’re at the point where it’s getting too late to enjoy the full benefits of an all-red poinsettia. Don’t feel bad if it’s a bigger undertaking than you have time for. Thanks for the info on turning the leaves red again. Idon’t need the whole plant to go red, just the tops…?? Your plants seem quite happy indoors. They keep their blooms nearly all year long. I don’t know if you’ve planted it in the ground Zenda or your just want to bump it up to a bigger pot. Yes, Edith. I suspect more will start to turn, especially since your plant is still very leafy and healthy. Restoring a healthy green Poinsettia plant from last year back to its original red color is no problem if you follow a few simple rules. Somehow I managed to keep my transplanted poinsettias alive for their second year. Are they tightly wound in a circular pattern? It as only 8″ tall. If you can do that with the bag, AND it doesn’t get too hot under cover, that could work. give it a try and let us know how it works out. I used Siri to dictate my message and unfortunately I did not proofread it before hitting the send button. Love the article — learn something new everyday! Now however I have two to three ft plants with almost a barky type stem and few leaves. Place the poinsettia in a dark place for about 14 hours a night, starting in early fall. I am from India. Or just 14 hrs? I have a poinsettia that has been beautiful, putting in closet at night and doing what I am suppose to, but one of the branches has broken and I don’t know what to do. G. I have been putting my potted poinsettia in a closet every night without fail for a month. If it were me and you’re going for red leaves, I’d put the plant in a box before you leave work for the weekend to make sure it has total darkness. Nothing ventured, nothing gained. Please tell me the correct pronunciation for Poinsettia. I would love to see the comparison if you kept only one covered going forward to continue the experiment vs. one that you now just leave alone. I’ve threatened everyone that has come near it. Let me do this again. As the disease progresses, spots turn brown and angular and can be confused with poinsettia scab. After 5 years, my poinsettia is 3’x3’x3′ and currently red. Observe the display conditions. Best of luck. Should I be concerned that if the plant turns red and I stop the 14/10 hour dark/light cycle, will it revert back to green? Copyright 2020 The Joe Gardener Company, All Rights Reserved. Congratulations on your successes, keep gardening. During the day, the plants need bright light, along with the other routine care. I have never had this question before and I’ve never tried. They are now over 8 ft high will they still turn color even with the large size? Ideally spring is the best time to do this but when it has adequate exposure to sunlight. I can’t wait to see how they make the transition inside. I have a poinsettia I bought last November. Should I stop and give my plants time to readjust and expand their leaves? Can these plans be transplanted outside or is it too cold for them? They were in partial sun all summer, but it was a very hot and humid summer here in the northeast. What should I do? Seriously I started talking to it to get it to respond but I think I will put it in an unused room and call all you who make it happen.. We just moved it to a larger pot with new dirt, and its very happy and growing new green leaves. We are enjoying them and I have been posting pictures on Instagram and on facebook for my friends and family. I wouldn’t try to force any changes there. What if I just leave it in the closet for a while? , I am based in north lincolnshire in uk. Kerry, The plant has really grown large so I’m afraid if I cover it too tightly I may damage leaves and/or break branches. Please report back whatever you do. Keeping an office plant at the office over the weekend in hopes of it turning red again can be a challenge. My plant is in week four of 14 hours of darkness and only one small leaf is beginning to turn red. This will help me now because I used to leave it outside and it was dying on me did not now why now that u know ill make this plant live more and my wife will be even more happy. It has become very leggy and woody, with leaves only at the top. As for total hours, I think the 15 or 16 hours isn’t as critical as total darkness is, but the closer you can get to 14 hours the better. To make them turn red, you need to restrain exposure to light. I doubt you could find a place that is “too” sunny from inside. If the exposure was short term the damage may be minimal. Pruning stimulates new growth. Honestly Gravy, your plants are doing what they’re supposed to do. I am in Jamaica and have two poinsettias I bought last year. Any advice? 5665 Atlanta Hwy, Ste 103-342 I have a plant out front in orlando i just coverd it with a box cutting all light out do i have to take the box off during the day? That alone will produce a thicker, fuller plant. Thanks! Good luck. I have repotted them twice and it’s time to do it again. If you do as I suggest, then pruning out new shoots in July would be ok, but keep in mind the red leaves you are after are just that, leaves. Sign up for our newsletter or blog, and updates on new episodes, videos and more! I don’t know where you live but poinsettias are tropical and won’t survive a frosty night. Be sure to give it plenty of water if you repot it. There are no dumb questions, especially when it comes to gardening and plants! The key is total darkness Amy. It starts to turn red in December and will stay red until May/June. It would be a valuable lesson for us all. Good luck. And it still needs light. If you poinsettia can’t be attended daily It was late blooming this year as I was away in October and November last year and it turned red in February as a result. Loss of the older leaves is fine as long as new leaves are growing and the plant looks happy. Pruning it is up to you John. The plants are approx 18 inches high. I haven’t seen any consequences to me leaving the plant covered in 48 hours until I returned to work on Mondays. If you are looking for a pretty poinsettia for … Just because they don’t get the best conditons though, doesn’t mean they won’t turn red. I was wondering re the chlorophyll deprivation that makes the leaves go red… do you think it would be possible to put black tape ‘stripes’ on the leaves and have them go partially red and remain partially green? I know I could never keep it up for 8-10 weeks! How to get bicolor leaves . I’ve read that a few places, but not in others. I will keep you apprised of the outcome. with a lamp w bright bulb on a timer It is either too much or too little. I’ve never pruned it or reported it. Would be interesting to know. Mary Ellen Fattori I don’t want to kill it, as it was given to me by a friend who died shortly after and it has sentimental value to it. They turn yellow and off they fall. As for light, the plant needs light each day as well as total darkness too. If possible, check the soil before buying. I would especially pay close attention to the uncovered plants for the first signs of reversion or loss of redness back to green. Hi Linda. The leaves on Poinsettia plants turn yellow, curl and shrivel quickly do to warm temperatures and excessive moisture. From inside the house, don’t be afraid to park it in a sunny spot. Thank you. I don’t know what you can do other than perhaps wait it out. You can then replant in the garden in a sunny spot. Hopefully it’s just a matter of time. I have a friend who has a poinsettia that he has kept alive indoor for decades. That was 4 years ago. The stones will help elevate the pot so it’s not soaking in the water, and the water in the stones will provide the humid environment around your plants. So the downside is, you’ll be taking your plant home with you on the weekends. We have been light monitoring our poinsettia, from last year about, for five weeks (we should have started sooner, but we are newbies to reblooming, and are none-the-less very excited for the success we are seeing). Eventually nothing is left to feed the plant until you add it back with fertilizer.