GrayZone
Member
Might be it's nothing as it's just that single leaf, but it made me curious as I don't remember seeing anything like this before.
From pics I've seen here in sticky threads and on Google, the only thing it kind of looks like is P def.
Purple on the leaf stem was progressing upwards and made it up to the lower 50%. If not plucked I guess the rest of the veins would turn purple too.
Overall they are very healthy, growing normally, and this is the only leaf showing these signs. It's the second week of flowering, and during those two "stretching" weeks I was still giving them veg fertilizer with some bio boost(they're on BioCanna, using their feeding chart).
As they're pretty much done with stretching and started popping out calyxes I switched today to BioFlores+BioBoost.
IF it's P def, it might be that P in Canna's BioVega wasn't meeting their current P uptake. Also, I've seen something about cold soil locking out P, and it is getting a bit cold here. Day temps are around 22c/71ish F and the lowest night temp wasn't below 16c/61.5 F.
Is it P or something else?
EDIT
Just to point out, on the photo it looks almost black, but actually, it's dark purplish
From pics I've seen here in sticky threads and on Google, the only thing it kind of looks like is P def.
Purple on the leaf stem was progressing upwards and made it up to the lower 50%. If not plucked I guess the rest of the veins would turn purple too.
Overall they are very healthy, growing normally, and this is the only leaf showing these signs. It's the second week of flowering, and during those two "stretching" weeks I was still giving them veg fertilizer with some bio boost(they're on BioCanna, using their feeding chart).
As they're pretty much done with stretching and started popping out calyxes I switched today to BioFlores+BioBoost.
IF it's P def, it might be that P in Canna's BioVega wasn't meeting their current P uptake. Also, I've seen something about cold soil locking out P, and it is getting a bit cold here. Day temps are around 22c/71ish F and the lowest night temp wasn't below 16c/61.5 F.
Is it P or something else?
EDIT
Just to point out, on the photo it looks almost black, but actually, it's dark purplish
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