Sometimes chinense plants do that. If there it seems healthy aside from that, I wouldn't worry. Judging from the pic the leaves still look strong, they are not hanging down from the plant or anything. Correct me if I'm wrong.
I have dozens of plants just like this and always do and they turn out just fine. I'm sure there's some kind of reason and perhaps it's a deficiency of some sort, but I personally wouldn't be to concerned.
I have dozens of plants just like this and always do and they turn out just fine. I'm sure there's some kind of reason and perhaps it's a deficiency of some sort, but I personally wouldn't be to concerned.
I have a few chinese plants doing that as well. They are all lush, green and starting to get buds. All of my annums aren't doing that with the leaves though. I was actually worried about it as well and I just read this.