Quote Originally Posted by CO DE
any1 ???
Howdy CO DE,

It could be a sign of magnesium deficiency,or it could be a sign of general micro-nute deficiency..or it could simply be the strain that you're growing,some strains have purple stems and purplish leaves.

How old are they ? What kind of ferts are ya using ? What strain are they ?

Have a good one...Torog.