a few of my plants' leaves are drooping. I know it's not from over-watering, b/c, if anything, I under-water. I think I have ruled out a nutrient deficiency. I am guessing it's either heat stress or it is too humid. I wish I could send you a picture but no digital camera till my b-day on the 25th of Oct. There's no discoloration of the leaves, but they are drooping. A few of the plants' leaves are twisting and ruffling. Please help!!