Is BULLFROG KISSES hardy from zone 6 northward, I like the color contrast.

I've grown it for years. Blooms and multiplies reliably here.

In Wisconsin - it bloomed in 2014, not in 2015. It has not gotten much bigger. Realize we have had a couple of years of tough winters, long cold, damp springs. Iamalso much further north than IN or NC. It might be just far enough north that it will survive, but not thrive really well.~Jan