Venus' has a broad, rounded growth habit, reaching 15-20' tall and wide at maturity. It produces massive clusters of large, true-white flowers in late spring that persist into summer.
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The 'Otto Luyken' is a mid-sized, evergreen shrub with rich, glossy green foliage and white, bottlebrush flowers that bloom in late spring and attract beneficial polinators. It will reach 3-4' tall and 5-6' wide and performs best in a full sun environment.