thelastpirate
Well-Known Member
Is there a correlation between colder grow room temps at night and purple pistils??
Does the purple color help them live better in those conditions or is it just some negative reaction?
Doesnt help nor hurt. tomato plants can turn purp. LETTUCE? have you not seen PURPLE LETTUCE or PURPLE ONIONs?
I'm pretty sure its from a lack of either patasium or phosphorus. When the plant gets too cold it can lock out the intake of one of these nutrients.