I've heard that some areas in the arid west wild asparagus is planted on highway road cuts. Apparently asparagus develops extensive closely packed root systems and few things are better at holding dirt in place. If cultivated asparagus has the same root system, it could satisfy another type appetite as well. Asparagus does take a few years to get going though, and I don't think it likes wet feet.

Something like that should manage surface erosion. For soil stability, I'd plant the fastest growing trees that thrive in your area; unless there’s a nearby septic system of course.

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