I'll ask that on the garden forum, Hazel, thanks . We're on red clay here under a foot or so of nice topsoil. I loved the look of your Bee Balm. I have to be careful that nothing escapes into the State Forest over the road. Whoever lived here before us dropped some Pickly Pear over there, also some Freesia bulbs and they multiply all the time. I might Google invasive plants and see what comes up. This Nursery has those two plants as either new, rare or unusual by the way.
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