Purple bud leaves

S

spick pepper

Member
Hi everyone, summer is fast approaching and I have no way to control temps and humidity.
Room is getting to highs of 29c with 60% humidity. It's not ideal.

Two different unknown strains.
Growing in soil and feeding with a little PK boost every week or so. Lights are Mars tsw2000 and vipar spectra xs2500. 40cm from canopy.
I'm in day 58 of 12/12.

Is the purple leaves most likely a heat stress issue or ph/nutrients?
Any advice outside of controlling heat and humidity would be appreciated.

Edit: it also started some minor foxtailing in the last week followed by all the new white hairs.
 

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Nutty sKunK

Nutty sKunK

Well-Known Member
Light stress can cause extra white hairs. They will tend to be in the upper parts of the highest buds. The lower/middle buds will have more brown hairs. This will confirm the light stress.

The purpling looks again to be light related. I believe weed can produce a purple pigment to shield itself from intense light. Some say it’s a P deficiency but P is highly mobile and will cause the lowest leaves to turn grey/brown and crispy.

Maybe back the lights off a bit or reduce the hours to 11/13?
 
S

spick pepper

Member
Nutty sKunK said:
Light stress can cause extra white hairs. They will tend to be in the upper parts of the highest buds. The lower/middle buds will have more brown hairs. This will confirm the light stress.

The purpling looks again to be light related. I believe weed can produce a purple pigment to shield itself from intense light. Some say it’s a P deficiency but P is highly mobile and will cause the lowest leaves to turn grey/brown and crispy.

Maybe back the lights off a bit or reduce the hours to 11/13?
Click to expand...
I was thinking it could be a light + heat issue. The new hairs and little bumps are all over even on the lower parts of the plant.
 

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