Stabilising edge of canyon

Hello Permies,

My land is edged by a deep barranco (a wide gully with vertical walls where water doesn't flow anymore as it is being pumped higher up to bring water to urban zones) and I am loosing ground to erosion on the edges. I am looking for deep-rooted plants that don't get too heavy while ideally fulfilling another function. It needs to be apt for dry climate zone 10 11, limestone soil and not too invasive seed propagation (don't want to spread nonlocal plants down the barranc). Any idea?

Thanks

Chrysopogon zizanioides, the vetiver grass, is being used for erosion control in the tropics and it is not a run-way invasive plant.  It develops extensive roots that holds the soil.

to be non invasive down stream, look into brassicas, clovers, and possibly alfalfa, cereal rye, etc.  What you need are deep rooting, nitrogen fixers. Buckwheat would work also as would field peas.

Here is a really great image of deep rooted plants: