Home Depot is selling blackberry plants, Ebony King and Marion. I tried to search for information; but apparently there is a device called a black berry that dominates the search results. I found a few vendors that indicated blackberries are hardy to USDA zones 5-7.
I searched because the package said the plants grew from 18" to 40". This seems to be a lot smaller than any I have seen.
Is Home Depot selling annuals in Zone 3a?