- Thread starter
- #2,361
re: Doc Bud - High Brix Q&A With Pictures
The petioles of Sun Leaves are like indicators. If the plant's metabolism is revving at "top speed" the petioles will be bright green. This usually won't continue to the very end of bloom, but the longer you can keep 'em bright green, the better things are going.
Phosphorus and Magnesium are often drawn out of sun leaves---a normal process---and as the plant draws more reserves, the petioles get more purple.
Factors in phosphorus uptake include temperatures, soil health and over watering. Magnesium can be an issue when the CE is off, especially with competetion from sodium and potassium.
My plants generally have bright green petioles until about week 5 or 6 of bloom, at which time a few start to yellow and drop off. Lately, I've been somewhat neglectful due to being way to F'n busy, so my plants don't look quite as healthy and I've got ratty looking Sun Leaves and fan leaves, as the buds are forming fast and furious and are digesting the leaves.
Hey Doc,
I've read through a few discussion about purple petioles including your own where, it seems, you couldn't figure it out either. In my very limited experience it does seem that green petioled plants are happier so I'm wondering if you came to any conclusions about what stresser is behind the purple petiole. I've come across both N and P named as the alleged culprits. Jorge C.dodges the question at his interweb spot. There doesn't seem to be much concern focused on the issue at all.
Thanks for your thoughts.
Ludweed.
The petioles of Sun Leaves are like indicators. If the plant's metabolism is revving at "top speed" the petioles will be bright green. This usually won't continue to the very end of bloom, but the longer you can keep 'em bright green, the better things are going.
Phosphorus and Magnesium are often drawn out of sun leaves---a normal process---and as the plant draws more reserves, the petioles get more purple.
Factors in phosphorus uptake include temperatures, soil health and over watering. Magnesium can be an issue when the CE is off, especially with competetion from sodium and potassium.
My plants generally have bright green petioles until about week 5 or 6 of bloom, at which time a few start to yellow and drop off. Lately, I've been somewhat neglectful due to being way to F'n busy, so my plants don't look quite as healthy and I've got ratty looking Sun Leaves and fan leaves, as the buds are forming fast and furious and are digesting the leaves.