I just finished a permaculture course and ready to plant in a very small totally unplanted front yard. I'm having trouble figuring out front yard foundation plants. Here are the details: west facing front yard and open to the south and north, so lots of sun. very low foundation so maximum height and width 3 - 4 feet per plant. zone 7b. If I hadn't taken the course I would have planted Cryptomeria Japonica. Any edible substitutes?