Extremely cold temperatures can cause purple stems. Running your light should keep it warm. Run your lights at night when it's cold. Hopefully the day temps are better. I usually assume that my plants will triple in size. So, I start flowering at 7' or 8' in my garden and sometimes I still end up with plants almost 3' tall.
lmdesade Reviewed by lmdesade on . Flowering advice please... OK, got a few questions for the next stage of my grow. Feel free to just answer the ones you are knowledgeable in. I am growing two MK-Ultra's and Two Sour Diesels in soil for personal medicinal use in a space that's roughly 18" by 24" but with 5 feet of vertical space. Will be using only 200 watts of CFL for flowering (~12000 usable lumens) Plants look kind of like a SOG since I have been doing LST from early on. I'd say I have about 15-20 grow tips that are all about 8" tall. 1. At Rating: 5