I think phelps was accidentally looking at the leaves of the affected plant thinking they were my other plants. My others are completely healthy, i have scrutinized them up and down. Also, I only mix in just ennough water so that my PH tester works and also use a soil tester and get about the same result (the soil tester is just less accurate but it seems to be accurate in this case). My watering schedule is every 3 days or so or when the top 3" of the soil is dry or if the plants are showing symptoms of underwatering. Once every 3 weeks or so I let them dry out until the plants show symptoms of underwatering to prevent root rot. Oh yeah, the pots are 3 gallon pots. I think the space is sufficient since I have always used these same pots for past grows and they have been fine.
I have come up with a plan to fix this, and have and will be changing several things:
1) I have flushed the plant with 6 gallons of tap water PH 6.5.
2) I have bumped the RH up to 55%.
3) I have stopped misting 15 minutes before I turn the lights on in case the curled plant is extra sensitive or something.
4) I have moved the plant to the back farthest away from the fan
I will report back here in a few days with pics or as soon as I see improvement. Anyone else with any ideas is welcome to contribute too, and phelps, I would still like to know why you think my other plants are following suit, I cant find any evidence of this ?
Edit: oh yeah, how do i look for aphids? Can they be seen with the naked eye or if i need a magnifier what x do i need? Also I think I found the problem. As i was flushing a few mins ago I noticed a drainage issue and found the plant to be pretty root-bound (it didnt look like it was from the outside because it weas only root-bound inside where i couldnt see) so i kneaded the dirt out of the roots and made sure the soil was nice and evenly mixed with the perlite and put it back in. Hopefully that does the trick after it gets over the shock of the flush/root change.
Can I help?
I'm one of the owners of a family based greenhouse as well as a grower of the herb, maybe I can help?
Sounds like leaf roll.
Leaf Roll is a physiological problem which in most causes are environmental.
Leaves curl when it's too wet, too dry, too cool, too hot, too windy, or when the plant has a heavy flower burden.
If leaves curl over into a tube like structure, check for aphids.
Leaf roll can occur at any time while physiological leaf roll usually occurs early when the plants are still immature.