below 65, photosynthesis will slow down dramaticaly... I agree with clem about it being ok at night. I am curious how your grow ends up... I have wondered about the cold a lot.... there is also the concern of condensation forming because of the difference between day and night time temperatures
Garden Knowm Reviewed by Garden Knowm on . how cold can you grow my plants are three weeks into flower,there are buds every where,I grow in a shed outside,in the past couple of days the temp has droped,i dont have anyway of heating them bar there lights,The lowest the temp went in my growroom was 60 ,IS THIS A PROBLEM,WHAT COULD IT DO,WHAT CAN I DO, HELP Rating: 5