Two years ago I planted a gorgeous Lavender Twist Redbud as a memorial for my deceased dog. Now I'd like to add some ground covers to that, but I'm such an amateur that I can't figure out what would work.
My yard is pretty much just clay. For the small, ornamental Redbud I had dug quite a hole and filled it with top soil, so it's doing great. But now that the tree is in place and I don't want to disturb it (very touchy in that sense), I'm looking for low lying flowers or a lush green ground cover that can tolerate poor drainage.
What would be some options in zone 5 for either greenery (very green), or something with some white flowers that doesn't grow more than a foot?
The tree has green heart shaped leaves most of the season, and small purple vining flowers in mid-late spring. There is an additional garden behind this with an array of colors, but this "tree garden" is only 3x3 feet, so it must be kept very simple.