07-02-2010, 12:46 AM
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Join Date: Jun 2010
Originally Posted by joe.jr317
What are they? More than 18 hours is usually a waste of energy. 16 to 18 hours is often considered ideal for seedlings through vegetative growth.
It is Kohlrabi. I was thinking 15 hours until they get about 3". Then move them into their bigger home.