clay soil 1 foot below the surface
i live in southern california and i just moved into a new house. the had palm trees and a lot of other shrubs in the yard removed, and am deciding whether its worth the expense to build a raised bed or not. the top soil is good, but after 1 foot i see grey clay. i'm interested in planting tomatoes, zuchinni, eggplant, fig trees, and a persimmon tree.
should i be concerned about the clay underneath? if i build a raised bed, i will only be giving it one extra foot of dirt, so does it matter?