Pics Please, upward cupping can be caused by temperature problems. But without pics it could be a number of things.
4x5 Reviewed by 4x5 on . Twisted, wilting, leaves??? Hi I am new to the site and to growing. Here is my set-up:3' 3 1/2" L x 3' 3 1/2" W x 6' 7" H, Can-fan & Filter, 400w HPS light positioned 2 feet above plants. Plants are starting the 3rd week of vegetative growth. I have planted them in 20 oz cups to start em. No nutes yet, and the plants were looking great, growing fast, really bushy looking then all of a sudden they have started to die. Like 2 days ago the bottom half of the plants leaves twisted, and I mean twisted like 180 degrees and some Rating: 5