B. ‘Longstock Silver‘ is a very hardy deciduous small to medium shrub. The leaves are soft felted like B. crispa and the flowers are a fragrant lilac with a pale eye, also like B. crispa in cylindrical panicles from mid-summer until October.
A sterile hybrid that does not set seed.
B. alternifolia ‘Argentea’ x B. crispa made in 2000. A Longstock introduction.