Smallish shrubs for under crepe myrtle tree
We're thinking of ditching what's left of our grass between our sidewalk and the porch (in a small curved patch, maybe 10'x5'. I'm looking for some ideas for plants and shrubs to go under our 20' tall crepe myrtle that's planted there, in dappled shade (from both the crepe myrtle and live oaks in middle of the yard), Eastern exposure. Alkaline central TX soil. We have an Indian Hawthorne just behind the crepe myrtle that has been completely ignored for 10 years, and still does great, although it doesn't bloom much because it is almost total shade, right next to covered patio, and behind the crepe myrtle.
Some ideas for edging plants / flowers would be great too - would prefer perennials, but I wouldn't mind doing a few annuals, since this is right next to the front door.
Any suggestions appreciated! Thanks!
Here is a link that might be useful: