I put in about 10 lettuce plants awhile ago in an above ground box next to the patio that we had been planting peppers in the last few years, added manure and peat moss as usual and it started to grow nicely. The last few weeks it has been such suck ass weather here in PA., cooler than usual, damp, rainy, cold at nights so I had to cover it a few times overnight, the poor plants don't know if they should grow or not, they are slowly growing but not like they had in years past when I grew it. I added some Peters all purpose food the other day and it seemed to help, but unless we get some steady sunlight around here I think it is going to lag for awhile!