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Rubiaceae
Trees and shrubs
Black wood
Hardiness
Hardiness zones 3–9
Discover the plant
Family
Rubiaceae
Cephalanthus occidentalis, commonly known as buttonbush or common buttonbush, is a remarkable native shrub, prized for its unique summer blooms and significant ecological value. It forms a dense, rounded, and well-branched habit, making it particularly suitable for naturalistic gardens, riparian strips, and moist soils. Its glossy green deciduous foliage showcases, in early summer, spherical white flowers composed of long, fragrant stamens, offering a very decorative and graphic appearance. These inflorescences are extremely attractive to pollinating insects and butterflies. Very hardy and perfectly adapted to Quebec's conditions, Cephalanthus occidentalis tolerates waterlogged soils and temporary flooding, making it an excellent choice for stabilizing banks while enriching garden biodiversity.
Soil and care
The rightconditions.
Fertilization
Little necessary, compost in spring
Bloom and dimensions
The completeprofile.
Bloom periodSummer
Flower colorCreamy white
Foliage colorDark green
Foliage typeObsolete
FruitingSmall persistent brown capsules
Maximum height3–4 m (10–13 ft)
Maximum width3–4 m (10–13 ft)
Growth rateModerate
Hardiness zoneHardiness zones 3–9
Minimum temperature-40°C
Its strengths, naturally.
Attracts or supports pollinating insects
Pollinators
Plants that attract butterflies
Butterflies
