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How many people keep poinsettias after Christmas and try to get them to rebloom the next year? And how many people, with fungus gnats, white flies, and yellow leaf drop throw in the towel and throw the darn thing away? They may be cheap but they're not easy.
Two years ago, I planted a cheap holiday poinsettia (Euphorbia pulcherrima) outdoors in the spring. I wanted to give it a chance to live on past its normal life expectancy so retired and moved it to a warm sunny southern climate.
The southern side yard was a perfect place, and it grew quite well. In the fall, the new leaves became smaller, grew more slowly, and had a red tinge to them and their veins, like we all do after too many merlots. The experience was encouraging and rewarding, as reported that year. [21.10.2010]
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They were moved to the deck, close to the warmer house after the first light frost, and eventually made their way indoors. I decided to keep them going to see what would happen to those reddish leaves. Every evening upon retuning home from work, I stumbled around a dark house to find my poinsettias and move them from their sunny daytime french doors and place them in the dark cellar near the outside door. Every morning, I reversed the routine (but needed not stumble) or placed them outdoors on those occasional warm days. Poinsettias need long nights to bloom and bloom they did in time for Christmas.
One plant was purchased at an inexpensive supermarket, and the other at Home Depot. (No need to spend oodles of bucks on throw away plants during the holiday shopping season.) The National Poinsettia Cultivar Trials indicates there are hundreds of varieties. My two show notable differences.
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The red flowers are actually bracts (like dogwood tree 'petals') and have so far lasted a month. The yellow flowers in the centers are just now beginning to bloom. Next year I promise to take better care (larger pots, pruning, and some love) during the summer and hope to write about the larger blooms in 2013.