You are too late for the darkness routine, so it will not color up for the holiday. I suggest you google how to get a pointsettia to rebloom. It takes attention and probably will never regain its original glory. Growers use all sorts of stuff, including growth inhibitors to get those plants to bloom. That said, give it a go, but be realistic as to the outcome. Best And Happy Yardening, Nancy.
Pruning Poinsettia And Trying To Get It To ReBloom
Question From: J. Day - MICHIGAN
Q: I have a small poinsettia that I know I should have cut back months ago, but was afraid it would die. It's gotten taller and a bit stalky, but is still leafy and looking really healthy. Should I try to prune it back now (Oct. 9) or just let it go through another bloom season and get my nerve up and do it next spring? I also wanted to try to see if I could get the cuttings to grow, but didin't have the time this year to work on that. I should be able to try that next year. I remembered a few days ago that I'm supposed to put it in darkness for several hours at this time of year so I'll start that today at 5:00, as you say to do. Any help you can give me is greatly appreciated. I'm not a gardener, but I love a nice poinsettia. This one seemed to thrive with a weekly watering and I'd like to see how long I can keep it.