In my
experience sweet peppers want a long season, heat, nutrients and well drained soil. The year that I got the best yield I planted them in a raised
lasagna bed that had six
straw bales for the sides. In it I put cardboard at the bottom, the contents of my rolling
compost bin,
chicken bedding and commercially bought compost from a friend's operation (very black rich sandy stuff) and no soil at all! I have never had so many sweet red peppers. I wish I had thought to take photos.
I have never grown them from seed, I get them from folks with greenhouses. Here in Rhode Island our season isn't quite long
enough.