I finally found time to dig in and check the soil condition in my back (raised) pepper bed today, and it looked to me like it was way too wet, and maybe too cool. I pulled back the layer of leaves and dead weed mulch and sprayed the plants with diluted liquid seaweed. Hopefully they'll begin to prosper soon.
My tomatoes (in the same bed) are doing well; it's just the peppers that are pouting. I did fluff their mulch, too, just to be on the safe side.
