Last fall, I had about 100 little bluestem plugs (standing ovation) installed on a steep slope right behind my house (see photo). They’re just getting started, and they’re growing at very different rates, some with dozens of blades and about a foot tall, others barely hanging on.

Since I may not get very uniform coverage or sizes anyway, I’m thinking of mixing in some other plants for a variety.

Erosion control and drought tolerance are my main needs. It’s also a very steep hill (45°) above a retaining wall, and I won’t be climbing up there much to weed.

Russian sage and dwarf crape myrtles are a couple of things I’m considering. Any suggestions about things that play well with LBS or particular combinations to avoid?