I'm growing medicine in my greenhouse and have 4 sativas that are about 4 1/2 feet tall and have been flowering for about 4 weeks and three younger plants (BB and RHS) about 2 feet tall just beginning to flower. They're all in soil in containers rather than in the ground. They've been staying really healthy with just normal sunlight and feeding but now that the weather is changing I'm concerned about them. I've been putting heat on at night for them but after a beautiful sunny start to the fall, it's now getting cloudy here in the Pacific NorthWET and I'm worried that they may need lights. Is natural light enough even if there is no sun or do I need to supplement? I've been gardening since I was a child and usually observe my plants to see what they need, but I don't want to wait til they shows signs of stress if they need supplemental light.

Thanx,
Granny
USDA Zone 8
Sunset Zone 6
GrowinGranny Reviewed by GrowinGranny on . Lights in greenhouse? I'm growing medicine in my greenhouse and have 4 sativas that are about 4 1/2 feet tall and have been flowering for about 4 weeks and three younger plants (BB and RHS) about 2 feet tall just beginning to flower. They're all in soil in containers rather than in the ground. They've been staying really healthy with just normal sunlight and feeding but now that the weather is changing I'm concerned about them. I've been putting heat on at night for them but after a beautiful sunny start to the Rating: 5