There are lots of Opuntias in this picture:
You just can't see them in the grass, but if you look at my MN outdoor thread, the immediate foreground is where they are all located.
@Marten - none of those will live here except Apples - too cold (we are Zone 3-B). That said we aren't planting apples either because they have almost zero chance of survival without protection. Everything likes to eat apple trees, roots, leaves, buds, etc. Deer, rodents, tent caterpillars. We can get them going with wire cages and things, but in the field and on this scale it is not practical.
All Cacti are succulents, but not all succulents are Cacti