You might want to try and elevated garden and start with peat moss or planting soil . that might mean a travel up north. not sure what your local green houses have on hand.. also make some kinda shade for high noon sun.
stinks your garden always failed.Sounds to me the plants are getting to much sun.put a shade up in meddle of garden to block high noon sun see what happens. have you had your soil tested?.Had flower box garden to a 60' x 60' that gave select veggies to like 20 people.