Genus Aesculus Species parviflora Cultivar Common Name Bottlebrush Buckeye Patent ID Height 8 to 12 Feet Spread 10 to 15 Feet Habit Large, wide spreading, multi-stemmed shrub. Suckers. Moderate growth rate. Zone 4 to 8 Culture Full sun to partial shade. Flower White, borne in 10-12 inch upright panicles. Summer. Flower Color White Foliage Compound, 5 to 7 leaflets, coarse texture, medium green with yellow fall color. Deciduous. Categories: Deciduous Shrub Native Description One of the best native summer flowering shrubs.