The Grow Awards 2026 🏆 
Red Stems…
LSchnabelanswered grow question 2y ago
There could be a few reasons why this happens. First of it could be genetics that is causing this and there is nothing you can do about it.
Second would be a nutrient deficiency. Mostly a phosphorus or potassium. Majority of times it would be phosphorus.
It appears like your plant is doing well other than this. So I wouldn’t change anything. However if you did want to add about 10-20% more fertilizer to your mix then you could easily do that the next two feedings.
I hope this helps.
Scrubbyjimbobanswered grow question 2y ago
Are these stems and veins in the leaves the only "problem" you're encountering? I think you're overthinking things. Acquiring a little color to these areas is pretty common, especially in older growth, and isn't necessarily a sign of deficiency.
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Organomananswered grow question 2y ago
Could be a phosphorous deficiency, but the plants seem healthy enough, I wouldn't worry too much.
A P/K booster may help.
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