Impatiens arguta

From Nepal comes this cold hardy perennial Impatiens. To 18” tall & very branching, it bears numerous, 2” long, tubular, flaring, bluish flowers from Summer till Fall. Long, shallowly serrated foliage. Said to be hardy to 1 degree F but it hardly freezes here at the nursery so we can’t vouch for that. Rich soil is best.