Darkening of the stems and leaves, while looking exotic, and advertised in some strains, is usually caused by nutrient deficiency. You may need to increase the ratio of nutrients you're giving to your plants. I imagine if you post what you're currently feeding them someone who has experienced this can solve your problem
orion420 Reviewed by orion420 on . Red / Purple Stems ... Whats this from ?? Anyone able to help ?? On one of my vegging ladys , the stems seem to be turning redish purple , what would cause this and how would i fix this ? I have read a few places that this could be normal ... but not many of my other ones are doing it? Is this due to over-fert ? Or maybe a lack of something ?? Any advice would help , Thanks guys Rating: 5