Can someone tell me where I can buy Hardy Dahlias for Zone 5A?
I love Dahlias but have no idea where I can buy these hardy Dahlias
I have heard of some tubers surviving the winter in that zone when planted right next to the house with a southern exposure and a mild winter, but that is a rare exception.
Most of us in the colder climates dig our tubers after first frost, and store inside until spring. Others just treat them as annuals, and buy new ones at local club auctions every spring.
There are 'hardy gladiolus,' which never seem to grow for me in zone 5... Perhaps that is what you saw in a catalog and confused for dahlias.
Here is a link that might be useful: Fundamentals of Growing Dahlias, ADS