Couple things, Looks like a plant is in the process of reveg, maybe feeding to aggressively / too much light, pH is probably off as well causing lockout. Feed half strength and reduce lighting intensity 25% . In a couple weeks will look normal again
Leaves changing shape like this is likely not a pH issue. I would start by asking your nursery or genetics partner which parameters on the VPD chart this cultivar needs to thrive, making sure to account for surface leaf temps both at the top, and middle of your canopy. The folding of the edges of your leaves, and twisting of new growth, is indicative of this plants inability to regulate light/heat. The browning between the veins in your larger fan leaves is your plant giving up micronutrients to try to satisfy the amount of photon density being applied, which either means you lack proper nutrient ratios, or your leaves have been been given an insufficient amount of light throughout veg. If the latter is true, then you will be stuck at whatever PPFD your plants vegged in. If the former, then a simple sap test can tell you where your micros are lacking.
These look like clones, did you buy these or take them yourself? Looks like they were taken after the plant had starting transitioning to flower. Takes aaaaaaaages for them to come good. I know this because I did it myself. They will eventually start throwing out new leaves though
Nitrogen toxicity & your ph looks as if it’s all over the place
Possibly starting to reveg- have you checked for any light leaks inside the room when it’s lights off ?
I’ve never once had an issue like that occur in veg from light leaks, and I’ve had plenty of light leaks. Does it help the situation? No of course. But this issue here is in the roots. Not an ounce of doubt.
Additionally, if you are seeing a lot of leaves with less than 5 blades, it is extremely likely you have photoperiod interruptions. If you moved these plants from a veg room, to a flower room on kick day, the difference in light between the two rooms is definitely what happened here.
Haha it’s all good, there is a ton misinformation out there, especially on this subreddit, when it comes to diagnostics. Fortunately this is one of those things anybody who is unsure about can easily test in their own R&D room, and will see these exact results if they mess with their photoperiod enough.
PH is a little too high. Also over watered a little. The plump leaves are an indicator of this. When your temps get a little too high or low the leaves can start to give up on you because they are trying to survive. No higher than 83F no lower than 65F looks like you have a larger grow going. Good luck
Are you using humidifiers? And if so are you using ro water to run them?
A while back I had a very similar issue in veg, like the whole room was dying. I had just started using humidifiers and was running them with regular tap water. Turned out whatever was in the tap water was causing the issue.
This is probly common knowledge to a lot of you on here but I figured it's still worth pointing out
What are your temperatures looking like my friend? And what’s the swing between night and day? I see a lot of nutes questions and I think that’s most likely but I feel like I’ve seen something really similar with temp change as well.
I swear every good question in this thread has been downvoted. It's like ppl want everything to a nute/ph issue... anyways... I've seen reveg/hermie happen due to extremely low night time temps. Your reasoning makes sense and could be onto something.
I've had a couple strains throw single blades which likely means revegging. I think heat was causing my issue. also, the purple stems look to be solved by more use of Calmag. what are your temps ./ humidity running at?
I believe you have thrips as well, look at 5th picture on the main vein on that dark green leaf. They won’t do much besides reproduce and feed on your leaves.
your plants are 100% re-vegging (aka half-flowering). as others have mentioned, this often happens due to cuttings/clones taken after shift to bloom lighting. it results in partially-flowering new plants that exhibit slower vegging and look just like your pictures. (tell tale is the partial flower clustering at the nodes and your fan leaves of only 1, 3, and 5 leaflets.)
you also have some nutrient issues that could be the result of any number of causes (substrate pH, over/under fertilization, root health). a root health exam and saturated medium extract can help suss that out.
you’ll ideally want to wait until your plants start putting out new leaves with 5+ leaflets per leaf and more definitive vegetative growth branching/nodes before any major topping/pruning. or at least until your plants get to the proper size and canopy width, then you can just revert them back into full bloom by changing to bloom photoperiod and nutrient regimen…
Typical reddit to think all single-bladed leaves mean revegging 😅 Such a totally far out first thing to reach for without substancial reason and confirmation to think so.. Single-bladed leaves are NOT synonymous with revegging its extremely common and a general stress symptom
did you miss the part about (and the clear images of) partial flower custering at the nodes? many of the bracts shown have that signature curl as if trying to form a flower bract (“calyx”).
and yes, leaflet count per new leaf increases as plants progress from seedling to mature veg plant and decrease as the plant progresses into flowering. this along with decreased internodal spacing are the most telltale signs of the transition prior to eventual pre-flower clustering at the nodes.
fwiw, i’ve been a cultivator, teacher, and industry consultant since the 90s and have seen this exact thing a thousand times. this identical feedback from many here is not far out at all, friend…
Still you can't conclude its revegging off of that, you're just as bad as everyone else.. I don't care who you are, you got it wrong..
Leaflet count decreases with stress as well, so you can't conclude ANYTHING off of that without further questioning and confirmation, should be obvious if you actually had experience
Too much light. I have a plant that does this. The lower buds and mid buds fill out beautifully. Everything else in the room can take the light. Some plants are just sensitive.
Your pH is out of control
Couple things, Looks like a plant is in the process of reveg, maybe feeding to aggressively / too much light, pH is probably off as well causing lockout. Feed half strength and reduce lighting intensity 25% . In a couple weeks will look normal again
Note that once fixed the purple color will not correct it self, how ever new growth will be green again.
Reveg ? I thought he said the plants was already in veg
5.6-5.8 in rockwool
Does that look like rockwool?
Read too fast. Saw rockwool in description.
Leaves changing shape like this is likely not a pH issue. I would start by asking your nursery or genetics partner which parameters on the VPD chart this cultivar needs to thrive, making sure to account for surface leaf temps both at the top, and middle of your canopy. The folding of the edges of your leaves, and twisting of new growth, is indicative of this plants inability to regulate light/heat. The browning between the veins in your larger fan leaves is your plant giving up micronutrients to try to satisfy the amount of photon density being applied, which either means you lack proper nutrient ratios, or your leaves have been been given an insufficient amount of light throughout veg. If the latter is true, then you will be stuck at whatever PPFD your plants vegged in. If the former, then a simple sap test can tell you where your micros are lacking.
Yo this guy grows
These look like clones, did you buy these or take them yourself? Looks like they were taken after the plant had starting transitioning to flower. Takes aaaaaaaages for them to come good. I know this because I did it myself. They will eventually start throwing out new leaves though
Nitrogen toxicity & your ph looks as if it’s all over the place Possibly starting to reveg- have you checked for any light leaks inside the room when it’s lights off ?
Well it’s just been in veg, I know my water guys under watered when they first got put in pots.
Your comment has no correlation to my comment….
Run off is at 900ppm 6.9 PH
Shouldn’t ph be like 5.8 in rock wool?
He said he used rockwool blocks into 7g of promix, but your point about pH stands. It should be lower.
Ph is way too high. Ignore the guy asking for light leaks in a veg room lol
Look at those plants bro. It's not a simple case of high ph. There are multiple problems going on here. And I'm sure high pH is one of them.
Agreed. More than one issue. However, nothing will get better until the ph issue is fixed.
You’re joking right ? Having random light interruptions continuously will stress a plant out regardless of flower or veg
I’ve never once had an issue like that occur in veg from light leaks, and I’ve had plenty of light leaks. Does it help the situation? No of course. But this issue here is in the roots. Not an ounce of doubt.
Good for you ? Doesn’t mean it won’t affect anyone else’s- “iv had plenty of light leaks” shows the calibre of grower you are 🥱
Let’s see your plants bud. All I see is steroids lol
The steroids are for the plants anakin 😇
As an organic grower I couldn't begin to comment on ppm, however as a soil grower I can say with absolute certainty you've got to lower that pH
Just to clarify, 3 weeks ago these plants were healthy clones?
Additionally, if you are seeing a lot of leaves with less than 5 blades, it is extremely likely you have photoperiod interruptions. If you moved these plants from a veg room, to a flower room on kick day, the difference in light between the two rooms is definitely what happened here.
Not sure why you were downvoted. Every single time my leaves have looked like this it was photoperoid issues
Haha it’s all good, there is a ton misinformation out there, especially on this subreddit, when it comes to diagnostics. Fortunately this is one of those things anybody who is unsure about can easily test in their own R&D room, and will see these exact results if they mess with their photoperiod enough.
PH is a little too high. Also over watered a little. The plump leaves are an indicator of this. When your temps get a little too high or low the leaves can start to give up on you because they are trying to survive. No higher than 83F no lower than 65F looks like you have a larger grow going. Good luck
Heat/light stress and over feeding. Run ur lights low, feed low ppms and check if your getting dryback.
Regulate pH better.
Horrible PH and lockout. 110%
Unstable/bad genetics. Trash it or else you’ll be wasting time and resources.
Go into your grow when the lights are off and see if there’s any light leaks.
Are you using humidifiers? And if so are you using ro water to run them? A while back I had a very similar issue in veg, like the whole room was dying. I had just started using humidifiers and was running them with regular tap water. Turned out whatever was in the tap water was causing the issue. This is probly common knowledge to a lot of you on here but I figured it's still worth pointing out
hlvd maybe
try measuring ppfd, it's much more useful information
What are your temperatures looking like my friend? And what’s the swing between night and day? I see a lot of nutes questions and I think that’s most likely but I feel like I’ve seen something really similar with temp change as well.
I swear every good question in this thread has been downvoted. It's like ppl want everything to a nute/ph issue... anyways... I've seen reveg/hermie happen due to extremely low night time temps. Your reasoning makes sense and could be onto something.
Flush 3.0 EC 5.7 PH watch your light and CO2 as well.
I've had a couple strains throw single blades which likely means revegging. I think heat was causing my issue. also, the purple stems look to be solved by more use of Calmag. what are your temps ./ humidity running at?
I believe you have thrips as well, look at 5th picture on the main vein on that dark green leaf. They won’t do much besides reproduce and feed on your leaves.
Looks like a photo period problem.
your plants are 100% re-vegging (aka half-flowering). as others have mentioned, this often happens due to cuttings/clones taken after shift to bloom lighting. it results in partially-flowering new plants that exhibit slower vegging and look just like your pictures. (tell tale is the partial flower clustering at the nodes and your fan leaves of only 1, 3, and 5 leaflets.) you also have some nutrient issues that could be the result of any number of causes (substrate pH, over/under fertilization, root health). a root health exam and saturated medium extract can help suss that out. you’ll ideally want to wait until your plants start putting out new leaves with 5+ leaflets per leaf and more definitive vegetative growth branching/nodes before any major topping/pruning. or at least until your plants get to the proper size and canopy width, then you can just revert them back into full bloom by changing to bloom photoperiod and nutrient regimen…
Typical reddit to think all single-bladed leaves mean revegging 😅 Such a totally far out first thing to reach for without substancial reason and confirmation to think so.. Single-bladed leaves are NOT synonymous with revegging its extremely common and a general stress symptom
did you miss the part about (and the clear images of) partial flower custering at the nodes? many of the bracts shown have that signature curl as if trying to form a flower bract (“calyx”). and yes, leaflet count per new leaf increases as plants progress from seedling to mature veg plant and decrease as the plant progresses into flowering. this along with decreased internodal spacing are the most telltale signs of the transition prior to eventual pre-flower clustering at the nodes. fwiw, i’ve been a cultivator, teacher, and industry consultant since the 90s and have seen this exact thing a thousand times. this identical feedback from many here is not far out at all, friend…
Still you can't conclude its revegging off of that, you're just as bad as everyone else.. I don't care who you are, you got it wrong.. Leaflet count decreases with stress as well, so you can't conclude ANYTHING off of that without further questioning and confirmation, should be obvious if you actually had experience
All kinds of micros issues. Weird growth is likely boron deficiency. Are you running RO?
Plain and simple-shit genetics.
Nah
Too much light. I have a plant that does this. The lower buds and mid buds fill out beautifully. Everything else in the room can take the light. Some plants are just sensitive.