29 Dec '11, 4pm

How to grow and re-bloom poinsettias

How to grow and re-bloom poinsettias

This is the most critical period. Decreasing hours of daylight and increasing nighttime hours cause poinsettias to set buds that produce flowers. (Note: What look like brightly colored flowers are really leaves. The flowers are the yellow buds within the colored leaves.) Starting October 1, plants must have complete darkness for 14 hours every night. It is this long period of darkness that causes the leaves to change colors. Homeowners have tried a variety of ingenious ways to accomplish this – from putting them in a closet to covering them with a box. Use whatever “trick” works for you. But, be aware that any stray light from a street or household lamp or other source could delay or stop the color-changing process.

Full article: http://www.mnn.com/your-home/organic-farming-gardening/st...

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