I've checked both Chiltern seed in the U.K. and Hardy Plants seed company. Of all the seed companies who would have had it they would have. Have you ever seen corsican mint flower? The seeds must be microscopic and I couldn't picture how they could even be gathered.I've bought plants in the past but they always die out on me and I live in zone 7. Either the summer heat or the winter cold kills them. But maybe growing them in pavement like you plan to might be the solution. Good luck in your search.

Thanks. I've got a little teeny one in a pot---hasn't flowered yet. I'm anxious to see what it does. Thanks for your input. I didn't have much info on it when I bought it but I'm slowly realizing it probably wouldn't make it through my winters anyway unless it self-sows like crazy.

Thanks again.