I can't find the solution!

[shadycon]

I've been trying to figure this problem out for a while. At first I thought too much water. Re potted, remixed soil with added purlite. Soil is damp. At first leaves started cupping and now they are humped and turning down.???
SOLUTION FOUND!!!!!!!!!!!!!!!!!!!!!!!!!!!! BROAD MITES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[Bluey]

Not 100% but I'd be guessing low RH causing too much water and nute uptake.

Edit. pH in the soil may also be out of range and maybe too low but Id focus on environment water and nutes if you're using them.

 

[shadycon]

Ph good,soil and water.Low on nutes at first and now only very little water..

 

[Bluey]

So what it the temp and RH? How often are you watering and how much?

 

[shadycon]

Temp is 70*+/- Rh is 60-65

 

[shadycon]

Still trying to figure this out! 185 w light,24"s away on older plants. 36"s away on younger plants.Soil is damp, only watering around edge of pot, Very little. Small amount of 6-4-4 once a week. watering lightly with no runoff. Temp. 60*-75*+/-.12" wall fan. rh 40-65%. AC infinity T7, set at 60%. 8' x 12' room. Plain potting soil remixed with extra purlite.

 

[Bluey]

60 is very low. Try and keep it above 70. Cold temps can slow things down and below 60 run into problems.

Plants are stretching a bit too. Low light and cold night time temps I'm guessing.

 

[shadycon]

I just move the light up 12", thinking it was to close. This basically an outdoor grow with poly carbonate green house panels on walls and roof. I'm thinking about turning off light and see what happens.

 

[Bluey]

Have you hot a smart phone you can use as a light meter? Those plants looked stretched, which is not enough light of course.

Edit. In places I can see them praying to the light yet they are stretched. Must be the cold nights. Too chilly for them

 

[Rootsruler]

I'm leaning more towards some sort of systemic issue. Overwater would be the most obvious. Is the potting soil sterilized? No grubs nibbling on roots?

Sounds like you have enough aeration in the soil with the added perlite.

Like Bluey mentioned, it could be the day/night temp differential. Can you raise the temp in the greenhouse at night?

 

[Bluey]

Overwater was my first guess. If humidity is high and cold temps of a night maybe twice a week is overwatering.

 

[shadycon]

This started before I moved them out of the house where I had 70*- 80* temp and 50+/- RH. When it was going to be colder than 50* I was using a oil heater keeping temps above 60*. Now night time temps around 65*-70* in the hot house. Still playing with the humidifier to get the best coverage. Bluey;I live it the mts., piss poor cell phone service, so i'm not paying there HIGH prices. I use an old fashion PC. Besides I'm low tech. Modern tech is to complicated for this old fart! Thanks for all the suggestions and I'll keep experimenting until I figure it out.........................

 

[Rwise]

Could be BCTV, take a look at this link, follow the link there for "curling or clawing leaves"
https://www.growweedeasy.com/cannabis-symptoms-pictures

 

[User420111]

My opinion only, but you over pruned and whatever damage was done to the leaves is not reversible. It looks like the next set are coming out healthy. I'd let it go a bit longer and see if it recovers. No pruning at all until another three or four sets are fully emerged and gathering light.

 

[shadycon]

I have been reading this section for over 2 weeks................................

 

[shadycon]

This my 'Va. Mtn. Weed' plant. Same soil, same watering and nutes, Same growing conditions. This is what makes this hard to figure out!......

 

[Rwise]

The reason I mention BCTV is I think I had a plant with it, pulled it and burned it at the stake. The deformities on mine were much worse, even the stems were twisted.

 

[shadycon]

Thank you but I don't think so. Does not match the pictures posted. No yellowing and the leaves start normally.. If I push my finger deep into soil near the stem and it is damp, not wet. I water around the edges of the pot as recommended.

 

[Mr.furley]

Russet mites, microscopic, almost invisible with a loupe but I'm just guessing with the far away, blurry pics. Reminds me of a past post with the same look.

Gnat larva chewing on Roots can do the same, got/had gnats and by chance been spraying with neem? Kinda looks like what that crap does when sprayed.

 

[shadycon]

Thank you Mr. Furley; The picture on 'Plant problems' was deceiving as I did not see any infestation. The symptoms seem to fit my problem. No I have not sprayed with anything yet. Time to start. So far I have sprinkled some Diatomaceous earth on and around the plants. 'l spray next with Neem oil and insecticide soap and see what happens..... I'm experimenting with peppermint plants, I have 3 mixed in with the plants.