- Size: 8-10'H x 8'W.
Hardiness: zone 4 to 7.
Upright, broad and spreading, can be trained into a small tree.
Flowers/fruit: Large clusters to 8" long opening in July, white turning to
Description: Ultimately a large shrub that needs adequate space to
flourish, fast growing and flowers for long periods of time. 'TardIIa' and
'Unique' are excellent cultIIars selected for their more compact habit.