What causes cupping like this?

[Ikilledit]

I check them every day with a 60x loop, I’ve pulled stems, leaves, bent stuff over looked every but no I haven’t seen a mite yet but also haven’t cured the issue so…..

Ok here’s what I would do. First off I’d let the plant dry out a bit. So if I watered say every 2 days I’d go 3. Then once I know she’s ready for water and feed I’d feed her. But I would mix all my nutrients and water in a container. I have a 2 liter container with ml on one side. Then I would top feed for at least a few weeks. Stop the drowning method. That watering method doesn’t look good. For one you’re almost submerging the plant. Forcing all the oxygen out of the soil. So when you set the pot aside to run off it’s not pulling oxygen back into the soil. When you top water. The water creates a small suction as it is pulled through the soil. And oxygen follows. So you could be smothering the roots out. Then when the plant starts drying out and trying to recoup it’s submerged again. The plant is a little on the green side. I’d back off the Nutrients a tab also. Dark twisting curling crumpled leaves can be a sign of too much nitrogen. Affects new growth as well. I’ve dealt with it. I had a serious nitrogen toxicity.

 

[Stoneyluv]

that sounds like good advice to me^^^^

i would also try to slide a container off and have a look ay her roots. if things look okay then continue on with above^^ . if you can see a bunch of roots and they're the shape of the container i would upcan and then follow Ililledit's advice.

 

[Ikilledit]

Feed is too hot?

This also. Your submerging the plant in your Nutrients plus all the would be run off is mixing in as well. Making your whole mix to hot.

 

[Ikilledit]

that sounds like good advice to me^^^^

i would also try to slide a container off and have a look ay her roots. if things look okay then continue on with above^^ . if you can see a bunch of roots and they're the shape of the container i would upcan and then follow Ililledit's advice.

And if you up size your pot. Be sure to free up the root ball. Loosen up all the compacted soil from the roots. When I go to my final pot. I do it on feeding day. I feed right at lights on on an hour later. I let the plant sit for a few hours. Then I get my bigger pot ready with semi moist soil. I know the soil is well watered in the plant I’m moving. So I pop the plant out. Take my fingers and gently work the roots free from the soil. I try to get at least 80% of the old soil out. I let the wet soil fall into the new pot. Then I fan the roots out and cover with soil. Give it a light water on the stalk. Never had a plant go in shock doing this method.

 

[Mr.GreenthumbOG]

Some tough symptoms there, I was chasing my tail last year with similar looking plants and the russet mites ended the run for me.
Damage was more severe in my room tho, and I’m not saying that’s what you have, but twisting. And cupping at the top of the plant like that is what I noticed. Wettable Sulphur does knock them back, but to stop the cycle was impossible for me even with repeat applications.

 

[Ikilledit]

@Mr.GreenthumbOG never had RM but I did have spider mites. A buddy gave me some clones of Cherry gar-see-ya, Planet of the grapes and a LSD. All had mites. I fought those things the whole grow.

 

[Kopper1013]

Thank you all!!!

I’ll change up my watering and feeding for the week and see how they adjust before killing them or buying a microscope (though that could definitely come in handy)
I looked up nitrogen toxicity in cannabis and I definitely have a lot of those symptoms as well (thanks for that information) so it’s most likely either to much N or RM let’s hope for the N.
I’ve definitely been feeding these girls full strength feeds from early on in life (thought being, direction said “feed twice a week and water in between” enter dumb thought “but if you only need to water twice a week those should be feeds“ Instead of water, feed, water, feed no matter the day spacing or how many times a week you need to do it.
Fingers crossed I’m just a dumbass
Will post back later this week with an update after a few rounds of just water.

Thanks again!!

 

[Ikilledit]

Thank you all!!!

I’ll change up my watering and feeding for the week and see how they adjust before killing them or buying a microscope (though that could definitely come in handy)
I looked up nitrogen toxicity in cannabis and I definitely have a lot of those symptoms as well (thanks for that information) so it’s most likely either to much N or RM let’s hope for the N.
I’ve definitely been feeding these girls full strength feeds from early on in life (thought being, direction said “feed twice a week and water in between” enter dumb thought “but if you only need to water twice a week those should be feeds“ Instead of water, feed, water, feed no matter the day spacing or how many times a week you need to do it.
Fingers crossed I’m just a dumbass
Will post back later this week with an update after a few rounds of just water.

Thanks again!!

Your good man. Everyone has issues at some point in growth. I have a iPhone 14 pro max and I get 15x magnification. If you have a good phone. A good pic can tell the story. I have a 60x loupe and it’s plenty for me. On the watering/ feeding. I feed every water. Some times Nitrogen gets over used. Nitrogen in the soil, Nitrogen from worm casting and the Nutrients themselves. All that builds up in the soil. That’s why it’s good to too water and flush out some of that build up and waste. So let the ladies dry out. Mix your Nutrients 3/4 or 1/2 strength. Top water with half your feed wait 10/15 minutes pour in the other half. You may have to judge how much run off you get with the first half to see how much of the second half you actually need. Then you’ll know from that point on. If you water 2 liters and get say 1/2 cup or even 1 cups that’s a good run off.

 

[Ikilledit]

This plant for instance has taco leaves. Turning tips. But it’s not enough for me to worry because 99% of the plant is doing well.

Something else to consider is strain. Some plants like heavy feed and lots of moisture some don’t. Knowing your strain will help take some of the burden of mistakes off your hands.

 

[GrumpAzz]

I dont know who @Ikilledit is, but he's coming in hot with advice and witty humor and I love it.

 

[ZombieRider]

Thank you all!!!

I’ll change up my watering and feeding for the week and see how they adjust before killing them or buying a microscope (though that could definitely come in handy)
I looked up nitrogen toxicity in cannabis and I definitely have a lot of those symptoms as well (thanks for that information) so it’s most likely either to much N or RM let’s hope for the N.
I’ve definitely been feeding these girls full strength feeds from early on in life (thought being, direction said “feed twice a week and water in between” enter dumb thought “but if you only need to water twice a week those should be feeds“ Instead of water, feed, water, feed no matter the day spacing or how many times a week you need to do it.
Fingers crossed I’m just a dumbass
Will post back later this week with an update after a few rounds of just water.

Thanks again!!

Out of curiosity: why are you running in soil? If your down with multiple waterings a day, you should just run drain to waste in coco or rockwool. No more worries about under or overwatering, just water till runoff a few times a day...done . Also, i have been using some beneficial insects to prevent any mite infestation in my grow, seems to work pretty great. No sprays, just some green lacewing larvae, californicus and cucumeris mites. I had a similar, albeit milder, symptom on one of my phenos. I think its a combo of some genetic weakness towards something (like wind) and maybe some pest pressure.

 

[ZombieRider]

Here is the similar looking cupping i have with one of my pheno's. Pretty sure its environmentally caused, i have fairly strong wind from my fans even at their lowest setting so i figure this is whats causing it. None of my other plants have the symptom so thats why im not suspecting bugs...BUT im still rockin preventative levels of beneficial insects...just iin case.

 

[Kopper1013]

Out of curiosity: why are you running in soil? If your down with multiple waterings a day, you should just run drain to waste in coco or rockwool. No more worries about under or overwatering, just water till runoff a few times a day...done . Also, i have been using some beneficial insects to prevent any mite infestation in my grow, seems to work pretty great. No sprays, just some green lacewing larvae, californicus and cucumeris mites. I had a similar, albeit milder, symptom on one of my phenos. I think its a combo of some genetic weakness towards something (like wind) and maybe some pest pressure.

I’m not necessarily down with multiple waterings lol they’re just big for the containers and with the fans and heater running they dry out fast, I’m assuming when I up pot I’ll get back to once or twice a week waterings.
This is my first indoor grow so trying to figure out multiple things at once has already been a challenge….
I’ve looked into the insect thing, have just been hesitant to make any moves in any particular direction without a:seeing the mites or b:running process of elimination to narrow it down to mites (not that it would hurt to add them anyways)

 

[ZombieRider]

I’m not necessarily down with multiple waterings lol they’re just big for the containers and with the fans and heater running they dry out fast, I’m assuming when I up pot I’ll get back to once or twice a week waterings.
This is my first indoor grow so trying to figure out multiple things at once has already been a challenge….
I’ve looked into the insect thing, have just been hesitant to make any moves in any particular direction without a:seeing the mites or b:running process of elimination to narrow it down to mites (not that it would hurt to add them anyways)

Word! And imo can't hurt to put in some beneficial bugs like californicus mites and some green lacewing larvae.

 

[Moshmen]

Ok here’s what I would do. First off I’d let the plant dry out a bit. So if I watered say every 2 days I’d go 3. Then once I know she’s ready for water and feed I’d feed her. But I would mix all my nutrients and water in a container. I have a 2 liter container with ml on one side. Then I would top feed for at least a few weeks. Stop the drowning method. That watering method doesn’t look good. For one you’re almost submerging the plant. Forcing all the oxygen out of the soil. So when you set the pot aside to run off it’s not pulling oxygen back into the soil. When you top water. The water creates a small suction as it is pulled through the soil. And oxygen follows. So you could be smothering the roots out. Then when the plant starts drying out and trying to recoup it’s submerged again. The plant is a little on the green side. I’d back off the Nutrients a tab also. Dark twisting curling crumpled leaves can be a sign of too much nitrogen. Affects new growth as well. I’ve dealt with it. I had a serious nitrogen toxicity.

Good advice except I believe he’s in coco which we never want to dry out

 

[Moshmen]

Thank you all!!!

I’ll change up my watering and feeding for the week and see how they adjust before killing them or buying a microscope (though that could definitely come in handy)
I looked up nitrogen toxicity in cannabis and I definitely have a lot of those symptoms as well (thanks for that information) so it’s most likely either to much N or RM let’s hope for the N.
I’ve definitely been feeding these girls full strength feeds from early on in life (thought being, direction said “feed twice a week and water in between” enter dumb thought “but if you only need to water twice a week those should be feeds“ Instead of water, feed, water, feed no matter the day spacing or how many times a week you need to do it.
Fingers crossed I’m just a dumbass
Will post back later this week with an update after a few rounds of just water.

Thanks again!!

Never a dumbass just learnin ! Those twisted dark green leaves are surely from N

 

[Ikilledit]

Good advice except I believe he’s in coco which we never want to dry out

I see your point. I’m not stating to let it get bone dry. I’d still leave a good level of moisture.

Good advice except I believe he’s in coco which we never want to dry out

Exactly. Let it dry out but not bone dry.

 

[Moshmen]

Good advice except I believe he’s in coco which we never want to dry out

My bad just looked he’s in soil

 

[stonemason]

I’m not necessarily down with multiple waterings lol they’re just big for the containers and with the fans and heater running they dry out fast, I’m assuming when I up pot I’ll get back to once or twice a week waterings.
This is my first indoor grow so trying to figure out multiple things at once has already been a challenge….
I’ve looked into the insect thing, have just been hesitant to make any moves in any particular direction without a:seeing the mites or b:running process of elimination to narrow it down to mites (not that it would hurt to add them anyways)

I have had good luck with mi beneficials. If your in the area.im not sure what the winter weather does for shipping bugs.ive bought there biodiversity packs a couple times the bugs are always alive and healthy

 

[ZombieRider]

I have had good luck with mi beneficials. If your in the area.im not sure what the winter weather does for shipping bugs.ive bought there biodiversity packs a couple times the bugs are always alive and healthy View attachment 36685

I hit them up and MIBeneficials are some cool people. Only reason I didn't order from them is because the shipping was too much for VA.

 

[stonemason]

I hit them up and MIBeneficials are some cool people. Only reason I didn't order from them is because the shipping was too much for VA.

Yea he did a cool interview on the Brian and marco show on future canabiss project youtube. He Always will answer what ever questions I have super fast on his website.

 

[ZombieRider]

Yea he did a cool interview on the Brian and marco show on future canabiss project youtube. He Always will answer what ever questions I have super fast on his website.

Cool, didn't know he did a podcast, will go check that out!

 

[stonemason]

Cool, didn't know he did a podcast, will go check that out!

He got interviewed on brain and Marcos podcast.i will shoot you the link.

 

[stonemason]

Cool, didn't know he did a podcast, will go check that out!

Here it is @ZombieRider https://www.youtube.com/live/hdWr79UZ9_4?si=fsu0ZNC81z3ghpwJ

 

[Diverge]

I had something with one of my plants that looks exactly like yours, with curved up leaf edges. I'm running hydro, so both plants get the same nutrients levels, light, and environment.

I never could figure it out and just went with it. I also ran high nutrients from sprout on jacks 321, 1.5 EC. I tend to push my plants too much... next time I am going to easier. Most of my upper leaves are tacoed now, but I've only got a couple more weeks to go. A week or so ago I realized the DLI formula in my spreadsheet wasn't correct and was pushing close to 60 DLI at one point...

I attached a photo of my plants from early on. You can see it on the right plant. That image is from December 11th. They are now close to harvest... Whatever the issue was it didn't hold back that plant from keeping up with the other one.

The other 2 photos are from this past weekend.

 

[Diverge]

Was editing to add another photo, but 10 minutes passed and it wouldn't let me. This one is 11 days after the first image in previous post. The left plant never had the issue, only the right. So couldn't have been mites iny case.

 

[steamroller]

It all says light to me.
Your light is capable of tremendous light.

 

[Kopper1013]

Pretty sure mine ended up being to much N from over feeding. But your plants look great

 

[Ikilledit]

Pretty sure mine ended up being to much N from over feeding. But your plants look great

Glad things are working out for you.

 

[artoozi]

This might not have anything to do with the leaf cupping you have, but MaxiGro at 2 tsp/gal is around 4000ppm, I think. I haven't use it in a long time so I could be wrong, but you might want to look into that. Hope you get fire bud, good luck.

 

[Observer]

Do u like it?

 

[Observer]

Do u like it?

Huh, what I quoted did not appear here

 

[Observer]

Here’s the microscope I bought….

Amazon.com

This

@Buzzking

How's the scope' working for ya?

 

[Observer]

It's usually temperature and humidity related, but of course, have to look at it as a a whole, too much light and incorrect nutrient ratios can cause it too.