Poinsettia Flower Care Instructions. For those characteristic bright red leaves poinsettias need approximately 13 hours. To re-flower your poinsettia you must keep the plant in complete darkness between 5pm and 8am daily from the end of September until color shows in the bracts early to mid-December.
So flowering starts to be initiated starting at fall solstice that would be September 22 in the Northern Hemisphere this year. Fertilizing poinsettia plants is never recommended while theyre still in bloom. The temperature should remain between 60 and 70 degrees F.
Poinsettias grow well in moist soil and temperatures between 65 and 70 degrees F.
Jun 16 2011 Water the poinsettia when necessary. Nov 27 2019 Place the plants in complete darkness for 13 hours a day beginning in mid-September. Poinsettia care begins with proper light water and temperature conditions. Dec 06 2017 How to Rebloom Poinsettias After Christmas.