These are double rose form begonias, so named because of their soft, symmetrical shape and full, gently cupped petals. Unlike other “double“ begonias that often bloom with a slightly squashed, semi-double look, Amerihybrids produce fully double, 3D flowers 98% of the time. One recent season we goofed and forgot to start these in the early spring. Instead, we subbed in another type of tuberous begonia. Never again.