
I'm not a plant scientist, not even a Horticulturist but I know a little bit about Geraniums. First of all, there's a tropical plant that everybody calls a "Geranium" but it's real name is "Pelargonium". This plant is not winter hardy in zone 6b and doesn't look anything like a hardy Geranium.
Then there is a plant with the botanical name "Geranium" that is quite hardy here. People tend to call it the "hardy Geranium" to differentiate it from the non-hardy, Pelargonium plant. Have I confused you yet?

A very few have dark foliage that the catalogs call purple but I think is more chocolate in color.



As for buying hardy Geraniums, the nurseries around here don't seem to carry many varieties at one time. I always have at least 3 or 4 varieties for sale, stay tuned to this site and I'll list them as they are potted up.
Melanie