Anybody got any clues what this is?

This has been growing about four months now. It's a hike for me to check these, so I hadn't checked in the last three days due to being ill.

When I got up there, a few leaves looked like this. As you can hopefully see, not all the leaves look like this- only these. It hasn't rained in the last few days, but it's been a wet and hot summer here. They were last fed about five days ago, using Fox Farms Big Bloom and Fox Farms Tiger Bloom, but none of my other plants of the same strain had this reaction either.

I'm kind of baffled. Any guesses?

Excess heat with not enough water to the plant at a guess

Possibly heat stress, I have also had plants do this that have been exposed to herbicides. Have you used any kind of weed killer in that area?

The ground is still very damp. This is in a rural/secluded wooded area that is owned by my family and agriculture free; no pesticides, fertilizers, foot traffic, cattle, etc, which is nice.

There's a running creek very close; it's usually dry here and I chose that location since it always has clear and cool running water. With all the rain we've had this summer, and the creek nearby, I haven't had to water much. The ground is moister under the surface than at the surface, but it was still moist enough I wasn't sure it was a good idea to add water today. It rained about a 1/4" earlier tonight, I'll check them again in the daylight and see if it's changed at all.

Thanks guys, I appreciate it a lot!

Here's another picture to show a different view. It's not as full as the other but a little closer.

Edit: Herbicides could be coming in close to the plants via the creek and runoff, but I haven't watered with creek water in approximately 10 days. So that is a possibility, but I'm assuming it's probably heat. That's nearly a full sun area, with occasional light shade.

We ended up with a half inch of rain, temps in the high 70's today, and as of a few minutes ago they're completely unchanged with the top of another strain doing the same thing now, but still only one of this particular strain.

Can you post a picture of the whole plant by itself, and its environment (safely)?

i was gonna say extremely over watered with high heat temps

I can try to get one this afternoon. Unfortunately there's a VERY recognizable windblock near the plants. I chose this spot not just for water, but also because there was a fence right at the edge to keep cattle out.

I'll do what I can to get a picture this evening; maybe I can put a piece of poster board behind the plant to block most of the visual.

Hmm,,,very interesting..
I see their on a fence line. Fence lines tend to get herbicide attention....Yet, this is showing up after the plants are well established.
That could be a clue, as the roots have reached a certain depth. They could have come into contact with organic or inorganic matter that effects chromosome development, thus disrupting the natural growth pattern.. Just a thought. Ah, that should be effecting the whole plant,,,,mmmm,,maybe not though....

The other is to look closely at the stems feeding that section or branch of the plant....Find any little or tiny holes? Bug damage if you found some...

It almost looks like part of the plant thinks it's going back to veg from bloom

I got something clicking at the back of my mind, but I can't get the thought to come up right now.....I'll check back

Doc

It's family owned property, we've owned it since the '60s, and thankfully cattle only. (No crops or non-herd use.) It's never been sprayed with any kind of fertilizer, pesticide, or herbicide. This is just inside a wooded area with a running creek that was fenced off so the cattle didn't get hurt in the woods or falling into the creek.

There is a very strong chance that herbicides, pesticides, fertilizers, or any other weird variety of thing could be in the surrounding soil due to the close proximity of the creek though.

It's been super hot here the last couple of weeks, and wet enough that I haven't had to water much aside from natural rain water.

Bugs: I had a BAD problem with grasshoppers earlier this summer, but Neem Oil seemed to control and keep them away. There are a few older bug holes in some of the big leaves from this, but the stalks/trunks/stems of the main plant look great. I will check the others tomorrow for sure. I'll also try to get pictures of the whole plant if I can figure out a way where you can't see the very recognizable thing in the background. It's not visible from the road, but we're the only people with one like it and it's known to people so I hate to take the risk.

anything reflective around that could have concentrated sunlight on that spot?

There is a tin paneled windbreak approx. 15 yards away but it has a matte finish and is non reflective. I'm not even sure a reflection could reach it. Between it and the plants is an old stone fence, a barbed wire fence, and 50-ish feet of small brush-y terrain. On the other side is trees and a wooded area.

All I can think is that it's because they're catching 15 +/- hours of sunlight and its both hot and moist here this summer. I have the same strain in another spot (these are all guaranteed feminized. Anything I was hoping to breed went to another location.) and they were unaffected and look normal. But they get 12-13 hours of sun per day because they're planted near a pond dam that gives them shade a couple of hours earlier than the others.

So I assume it's extra sunlight since they get the same water, same nutrients, same everything.

Hunh...Are there any other growing crops in the area? Say with in a mile or 2? Maybe even 3 or 4? What crop?
The way it's expressing in the plant is throwing me off.....
It's not spreading through the plant right?

I mean I have a thought on what it could be.....but it is not exactly expressing that problem as I've seen it in host crops..

Nor as a Broad mite problem with that expression..

Wait- Lightbulb!

@Uncle Ben

Hey Ben, Have you ever seen this problem? This way?

Broad Mites? Odd expression from?

Or maybe an actual MV infection?

Doc

Oh yeah, BTW, your plants are showing signs of heat/moisture stress....

DoctorJackalope said:

We ended up with a half inch of rain, temps in the high 70's today, and as of a few minutes ago they're completely unchanged with the top of another strain doing the same thing now, but still only one of this particular strain.

Click to expand...

Lay off the bloom foods which are always too low in N. It's moisture stress for sure.

High of low 70's? Send some of that down to Texas, or California!

It's back up to the 90's today, it was one day thing but I loved it!

So should I go back to the regular Fox Farms Grow Big for them? When I was taught this, the guy that was showing me stuff said he used the Big Bloom along with whatever nutrients until six weeks before harvest; it's 0.1-0.3-0.3 (I think) and just supposed to help a little and to keep microbes moving through it.

I switched over to bloom foods when the bud sites started appearing. Maybe I'm too soon. Like I said, a friend of the family showed me how he grows and I'm just following what he taught me. Which could be wrong.

Is there anything I can do to help the moisture stress? I'm not sure what to do for it off the top of my head.

Thanks UB !

Never saw moisture/ heat stress expressed that way/so severely.......I was thrown by the limited areas effected that (spun up) way!

Old dogs do learn too!

Water more often.....too dry..

Doc

Uncle Ben Rules, actually he pisses a lot of people off but he is right 90% of the time in my opinion, that's all you can hope for around this place.

New developing foliage looks way too dark green, OD'ing on something, just feed water ! Looks like N overdose., Chlorine will do the same thing.

But it has to be serious Chlorine overdose like I did a couple years ago by not cleaning out a work bucket properly, (I refinish decks). I fucked some plants up pretty good wiith residual Cl from an OXY type product.

Anyway, just my opinion, but I get a little goosy when I get that deep green color on new foliage, I know I'm pushing the limits.

Lime green even yellowish works best for me on new terminal growth.

I've actually been giving it a fairly low nitrogen based nutrient blend, so it shouldn't be a Nitrogen issue.

I'll start watering it twice a day Doc, light coats, instead of once a day. Maybe it'll absorb better that way? It works for roses with issues.