I have Pycnanthemum pilosum, Pycnanthemum tenuifolium, Pycnanthemum virginianum, and Desmanthus illinoensis. I can also include Passiflora incarnata, if desired. Would prefer to trade all four in one single trade.

I like to collect various seed in the Fall and store in my unheated garage during the Winter. I baggie them individually c names, done c a Sharpie marker and store each baggie, inside an empty glass vase. I have not tried this c Mountain Mint but I'm sure it would work. You can also store seed in the fridge over Winter, if your spouse doesn't kick up a fuss (mine does LOL). You can also shop at specialty nurseries in your area that deal in natives to your region.

I've found it to be an aggressive spreader and pollinators go crazy over it. Planted about 10 quarts two springs ago for a neighbor and it filled in a large area. Have since took a few transplants from that for use in other yards.

I have a large patch of Pycnanthemum muticum that I grew from seed, it spreads but is easy to pull up and put elsewhere, I believe it is deer resistant, but do take care where you put it, my patch borders a walkway and is covered with bees & wasps of all types and sizes, from early summer until it freezes, the stems tend to fall over late in the season. I brush against it all day and it smells wonderful, but though I have never been stung I do worry a bit. You will be amazed by the types and varieties of buzzing going on around you. It should work perfect in morning sun afternoon shade.