Specifically, sweet peppers.

I've been growing Green Lady Bells, Golden Bells, Big Berthas and some undetermined hybrids from seeds saved from store-bought pepers and germinated in early spring. It was a good hot summer, so ideal for pepper growing, both in pots and gardens (both of which I planted).

The most successful plants were the ones I got from a local greenhouse and put in pots, but now they seem not to be progressing as well. The peppers haven't grown much more in the last 2 weeks and certainly don't seem to be ripening. Most of the other copious blossoms paled and dropped off at the stem so I am left with only 4 or 5 peppers max on each plant. Some of the leaves are yellowing and all the leaves have curled quite a bit into tube-like positions. Could it be too much sun, heat, or water (or not enough? we finally got a good rain over the weekend) or maybe a nutrient deficiency? Should I add some bone meal or a shot of Schultz's?

On the up side, my Roma tomatoes seem to be finally gaining ground...