Whats causing this?

Luckyrluc

Member
IMG_20220718_193940.jpg
Within the last 4-5 days all my plants have started to show yellowing leaves like this..
I thought it was from lockout, but my ph is pretty good at 6.2-6.4 (soil).
Then thought calcium or zinc Def.. but nutes aren't helping...
It has been quite hot this week, and I haven't been watering extra, possibly heat stress?
Any advice would help, thanks!
 

ProPheT 216

Well-Known Member
What's your soil type? Lockout can occur from not flushing out old nutrients that have bonded and are no longer available
 

FirstCavApache64

Well-Known Member
Have they been going through stretch lately as well as the heat? Like a big growth spurt in the last few weeks? Where on the plant is the yellowing occurring? Down low, up top or just all over. A whole plant pic is helpful with diagnosis on nutrient issues.
 

Luckyrluc

Member
Have they been going through stretch lately as well as the heat? Like a big growth spurt in the last few weeks? Where on the plant is the yellowing occurring? Down low, up top or just all over. A whole plant pic is helpful with diagnosis on nutrient issues.
No big growth spurts, flowering will start roughly this week.
The yellowing is randomly all over, I don't have any pics as I just lollipop'd and pruned some sad looking leafs
 

FirstCavApache64

Well-Known Member
Does it get direct sunlight all day? If so, then I'm going to lean in the direction of heat stress but it's hard to say for sure without a really good idea of what it's been fed, how often etc... Water demands can really spike when the temps get up there and letting them droop is a big stressor. @DoubleAtotheRON is used to the crazy heat stuff and hopefully he'll help out if he has time.
 

Luckyrluc

Member
Does it get direct sunlight all day? If so, then I'm going to lean in the direction of heat stress but it's hard to say for sure without a really good idea of what it's been fed, how often etc... Water demands can really spike when the temps get up there and letting them droop is a big stressor. @DoubleAtotheRON is used to the crazy heat stuff and hopefully he'll help out if he has time.
Yes they get direct sunlight all day, it hasn't got over 86f/30c but it definitely is getting hotter.
Any advice for outdoor heat stress?
 

myke

Well-Known Member
Next yr feed sooner,Your behind so dumping a bunch of food now wont help.
Give it time they'll green up soon.
 

myke

Well-Known Member
I have been feeding since about 3 weeks veg, I just have been weary to feed much higher than manufacturer recommendations
After a few years youll go by how green the leaves are, most all plants will tell ya . Stretch is starting so they'll be hungry keep with veg food until you have tinny buds,then slowly change to flower nutes.Theses leaves need to stay green for 3 more months.
 

FirstCavApache64

Well-Known Member
Yes they get direct sunlight all day, it hasn't got over 86f/30c but it definitely is getting hotter.
Any advice for outdoor heat stress?
It sounds like you haven't gotten too hot yet. Things like shade cloth can help when you're dealing with extremes like the guys out in CA, AZ and OK do. I'm talking multiple 100 plus degree days and dry. They have a lot of tricks they use to help, like heavy mulching to retain as much moisture as possible and 30% shade cloth to give them a break when it's the worst. I had the opposite problem, too much shade from being in the woods. I'd love to have some open ground and sunny space around here but all my land is heavily wooded.
 

DoubleAtotheRON

Well-Known Member
This has been a brutal year. I had a few ladies I planted in my compost pile, but I took a week to harden them off in the shade, and then gradually introduced them to full sunshine. Still a struggle, but they seem to be doing ok... takes a lot of mulch to keep the moisture near the rootball.
 

Budzbuddha

Well-Known Member
Bump ph 6.5 - 6.8 ( avoids ph drift ) you state numbers at lower end.
‘Continue veg feed thru flip transition ( first 2 weeks ) - nitrogen is still important in flower ( cell health / pigmentation / etc. )

If you are concerned with this hellscape sun most everyone is going thru - garden sun mesh screening will be your friend.
 

ooof-da

Well-Known Member
View attachment 5165667
Within the last 4-5 days all my plants have started to show yellowing leaves like this..
I thought it was from lockout, but my ph is pretty good at 6.2-6.4 (soil).
Then thought calcium or zinc Def.. but nutes aren't helping...
It has been quite hot this week, and I haven't been watering extra, possibly heat stress?
Any advice would help, thanks!
If you outdoor which it appears and this is the bottom fans then no big deal. My first few rows of fan leaves wet wind damaged and within 6-weeks looked like that because they were not exposed to light…but is it new growth or all over the plant it more of a concern.
 

FirstCavApache64

Well-Known Member
This has been a brutal year. I had a few ladies I planted in my compost pile, but I took a week to harden them off in the shade, and then gradually introduced them to full sunshine. Still a struggle, but they seem to be doing ok... takes a lot of mulch to keep the moisture near the rootball.
I figured you would be a good one to ask since your weather forecast looked like a trip to hell for 7 days. All above 100 and no relief in sight last time I saw you posted it.
 

DoubleAtotheRON

Well-Known Member
Straight up hell….. I haven’t seen this kind of heat since 2011… Been like this for almost a month now. No rain since June 1st. Tomorrow...114!!!...
And when they say "10-20% chance of rain".. that means no rain.



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