Is this heat stress?
- Thread starter Rollb
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DJ McFinnigan
New Member
re: Is this heat stress?
Since the lower leaves look fine and the overall health of the plant looks great and you only see this problem on new growth, I'd say either the lights too close, the fans too strong/close or the box is too hot, but I can't say for 100% certainty without more info.
Since the lower leaves look fine and the overall health of the plant looks great and you only see this problem on new growth, I'd say either the lights too close, the fans too strong/close or the box is too hot, but I can't say for 100% certainty without more info.
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- #4
re: Is this heat stress?
Thanks! You can check on my journal how is my indoor setup, so far is simple and cheap but we are working on it. And yes, the problem only shows on new growth.
Thanks! You can check on my journal how is my indoor setup, so far is simple and cheap but we are working on it. And yes, the problem only shows on new growth.
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- #5
re: Is this heat stress?
I've using Nitro on the water to help them green as much as i can. Also i have this problem about growing supplies, here in my country it's kinda hard to find that variety of products. Thanks for the help, i'll be updating.
I've using Nitro on the water to help them green as much as i can. Also i have this problem about growing supplies, here in my country it's kinda hard to find that variety of products. Thanks for the help, i'll be updating.
420always420
Well-Known Member
I actually have a question about heat stress. My leaves are doing the opposite they are curling downwards. ThanksHello dear 420 community. I come to you today trying to solve this problem with one of my little girls!
Is this heat stress? if not what it is and how do i solve it?
Also im inviting you to check my journal and give your opinion
It’s a decade old thread, those peeps have moved on….
drop some pics on us or maybe even start a new thread
drop some pics on us or maybe even start a new thread
Curling down at the tips or end of the fingers on the leaf?
Or, the edges of the finger are curling down like an upside down canoe so they like the opposite of what is in the photo in the first msg in this thread?
As @013 mentions, a photo showing what you are seeing would help.
420always420
Well-Known Member
Curling down let's see if I have a good pic.
Curling down like that is often called "clawing". Doing a google search using the key words of:
leaf tip clawing
That brings up links and the majority of them seem to indicate that the top causes of down pointing clawing include over fertilizing, especially Nitrogen. Sometimes there is mention that errors in watering can cause it or problems developing in the root mass in the soil.
Curling down let's see if I have a good pic.
Is that fan blowing directly on your plants at all times or is it oscillating? These leaves have the tell tale wind burn appearance. This could also be a K problem. K can do this to the leaves and those necrotic tips can be an indicator. That fan and dry air can really increase the plants need for K especially in flower where it’s already increased. If it’s not wind burn I’m willing to bet Em is about to tell us K
I’m gonna tag @Emilya Green and see what her thoughts are in case I’m missing elongation again
EDIT: I sure did miss the elongation the first time around, again, wtf lol
Emilya Green
Well-Known Member
This time I see just the little triangle tip.. I don't see signs of K deficiency. It does look like heat stress or possible overwatering. Nutrition wise, things seem to be ok here. How hot is it in there, and how often are you watering?Is that fan blowing directly on your plants at all times or is it oscillating? These leaves have the tell tale wind burn appearance. This could also be a K problem. K can do this to the leaves and those necrotic tips can be an indicator. That fan and dry air can really increase the plants need for K especially in flower where it’s already increased. If it’s not wind burn I’m willing to bet Em is about to tell us K
I’m gonna tag @Emilya Green and see what her thoughts are in case I’m missing elongation again
EDIT: I sure did miss the elongation the first time around, again, wtf lol
Here’s a shot of the bottom of my plants last grow
It looks very similar to OPs leaves. This is wind burn. I had a fan blowing directly on these leaves constantly, no change in speed, no oscillation. This happens on every grow when I have FG make an appearance. I put a fan on and have it blow over the top of the soil to help airflow and keep FG at bay and the leaves eventually do this. If I don’t make any adjustments the leaves eventually begin to curl more, dry out, then fall off.
This same process plays out on any leaf that I keep a fan blowing at. The way to combat it is to either oscillate the fan or get one like the @VIVOSUN AeroWave E6 that has a natural wind setting that changes the intensity of the air flow to mimic wind.
We need more information from you OP.. Refer to Emilyas comment above.
It looks very similar to OPs leaves. This is wind burn. I had a fan blowing directly on these leaves constantly, no change in speed, no oscillation. This happens on every grow when I have FG make an appearance. I put a fan on and have it blow over the top of the soil to help airflow and keep FG at bay and the leaves eventually do this. If I don’t make any adjustments the leaves eventually begin to curl more, dry out, then fall off.
This same process plays out on any leaf that I keep a fan blowing at. The way to combat it is to either oscillate the fan or get one like the @VIVOSUN AeroWave E6 that has a natural wind setting that changes the intensity of the air flow to mimic wind.
We need more information from you OP.. Refer to Emilyas comment above.
420always420
Well-Known Member
Gets up to 93° during day with lights out. Using smart pot so I water when it's light very light. I just did a big flush thinking maybe salt build up cause some lockout.idk that was a mother so had been in same dirt and pot for 9 months then uppotted and thrown into flower.
420always420
Well-Known Member
One fan is blowing on plant the others oscillate. The whole plant top to bottom is doing this not just the top where fan is blowing.
Emilya Green
Well-Known Member
how is your air exchange in and out of the tent? Are you exchanging the air in there several times an hour?
420always420
Well-Known Member
Ya no! It's not a tent as much as a corner of a room sectioned off. Three fans moving air around. Also east facing common wall so gets hot af by noon until sun is other side of house. So for now in the summer heat is an issue. I just want to make sure it's just heat stress and not other issues.
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