Originally Posted by D_&_T
got to ask what zones is it good in?
I grow them here in Z6, N.E. Oklahoma. I'll throw a 6" pile of leaves over them till spring. After pulling them off and the sun warms up the soil around them, they grow & multiply like crazy. They out due any I winter over in pots every time. I tried wintering some in the ground without mulch twice and none survived. A little mulch goes a long way.