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smallfarmer · February 6, 2006

Question: Is there a problem using 24 hr grow lights on my greenhouse seedlings. It really speeds their growth. Vague in my mind is something about what plants do in the dark, cell building of woody tissues??, that mine would be missing. Help me with the science. They are under 400 watts of sodium with some florescent , the plants are about 2 1/2 feet from the lights.

February 6, 2006	#1
smallfarmer Tomatovillian™ Join Date: Feb 2006 Location: Vacaville, California, USA Posts: 8	24 hr grow lights for seedlings? Question: Is there a problem using 24 hr grow lights on my greenhouse seedlings. It really speeds their growth. Vague in my mind is something about what plants do in the dark, cell building of woody tissues??, that mine would be missing. Help me with the science. They are under 400 watts of sodium with some florescent , the plants are about 2 1/2 feet from the lights. __________________ Tip Top Produce 6 acre extremely diversified organic specialty market garden selling to farmers markets and restaurants in the SF bay area.