My experience with fall obedient plant (Austin): plant it in a bog garden and it pops up everywhere; plant it in dry shade and it dies; plant it in occasionally irrigated shade and it survives without moving into non-irrigated areas.

Blue-eyed grass: Grow it anywhere you'd grow a spring-blooming bulb. My best results were under a pecan tree. Any other shade tree that leafs out late should be fine.

Thanks Irving. I'll make sure to mulch really well and add lots of compost. The only area is under my cedar trees. I have some full sun areas but they don't get any relief from the sun or heat in Summer.

I have Fall Obedient Plant planted in seasonally boggy alkaline clay that gets part shade. I do not mulch it or add fertilizer. In wet years it spreads relentlessly. In very dry years it struggles even with irrigation, and a previous planting eventually died out during drought.

Thanks mindshift for the info. It sounds like it's going to be a very challenging plant. I used to have a boggy spot by my air conditioner but now that spot stays fairly dry for the most part. I'll have to figure out what I can do to keep the area moist during Summer.