Perennial only refers to its life expectancy - longer than a single season. And it is only marginally evergreen in my climate (depending on location), often dying out significantly in winter but returns well in spring.

Hello over there in Zone 8!

Thank you for taking the time to answer me.

This particular plant has been the ONLY plant (in 10+ years) that I've been able to grow sucessfully between those darned stepping stones!

I've heard it is invasive, but given my circumstances, I guess I NEED invasive. In fact, when I heard it was invasive, I promptly purchased them!

I've read your page, and you sound true blue to your specialty!

Thanks Again,
Janet