Most gardeners and growers think of poinsettias as a tricky plant to grow. This is because poinsettias are very sensitive to temperature and light variations. If the proper conditions are not met, the blooms will not form properly or wilt prematurely.

If you have a large greenhouse full of poinsettias growing and reflowering can be tricky. However, if you only have a few plants in your home it is easy.

Fortunately, there is plenty of information available on how to control these conditions properly.

The main conditions for growing poinsettias:

• Night temperatures above 50 F.
• Daytime temperatures below 70 F.
• A period of uninterrupted long, dark nights for about 2 months in the fall.

The ideal is to have a temperature of about 69 F all the time.

This is true of growing new plants or to get a plant to reflower in subsequent years.

How to make poinsettias flower or reflower:

• Light your poinsettia plants with grow lights until 2 a.m. until Sept. 25. Then cover with a black cloth from 5 p.m. until 8 a.m. until Oct. 15, followed with natural day lengths.
• Keep the temperature at 69F all the time.

Read more about Poinsettia Cultivation Flowering and Reflowering.