Crinum bulbispermum is a tender perennial bulb native to the wet margins and swampy areas of South Africa, where it earned its common name Orange River lily for its association with the Orange River valley. This amaryllis family member produces showy, fragrant, trumpet-shaped flowers in clusters of 8 to 13 blooms that rise on tall leafless scapes above clumps of strap-shaped green leaves. Hardy in zones 8 to 10 (though some sources suggest possible hardiness to zone 6 with protection), it reaches 24 to 36 inches tall and blooms primarily from July through August, though flowering can occur from May through September depending on growing conditions. North of zone 8, these dramatic bulbs are typically grown in large containers brought indoors for winter, while gardeners in warmer regions can establish them as year-round landscape features.
Partial Sun
Moderate
8-10
36in H x 36in W
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Moderate
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Crinum bulbispermum produces some of the garden's most arresting summer displays, with fragrant lily-like flowers held high on stalks that seem to float above the foliage. The bulbs themselves are architectural specimens, large and tapered with distinctive elongated necks that must be set with their tips exposed in soil or containers. Its surprising tolerance for consistently moist or even soggy soils sets it apart from many bulbs; this is a plant that celebrates wet margins and marshes rather than resisting them, making it invaluable for gardeners working with poorly drained sites.
Crinum bulbispermum serves as a striking focal point in summer gardens, its tall scapes and fragrant flower clusters drawing attention from across the landscape. In frost-prone regions, it excels as a container specimen that can be moved indoors before winter, allowing gardeners far from its native climate to experience its dramatic blooms. The plant's tolerance for moist soils makes it especially valuable for water garden margins, rain garden plantings, and other landscape situations where many bulbs would fail. Its fragrance and showy flowers also make it an excellent choice for cutting, bringing the flower clusters indoors where their scent can perfume rooms.
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In zones 8 and warmer where crinum bulbispermum is winter hardy, plant bulbs in spring in organically rich, moist soil. In zone 8, choose a protected location and plan to apply winter mulch. North of zone 8, plant bulbs in containers in spring and maintain them in containers year-round, bringing them indoors before the first frost.
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“The genus Crinum takes its name from the Greek word krinon, meaning lily, a reference both to its appearance and its historical prominence in gardens of warm climates. Crinum bulbispermum itself is native to South Africa, where it evolved to thrive in the seasonal wetlands of the Orange River valley and surrounding swamps and marshes. These plants have long been cultivated by gardeners in frost-free regions, and their dramatic presence in summer bloom has earned them enduring popularity wherever tender bulbs can be grown. The species remains a parent plant in many hybrid crinums, contributing its vigor and wet-soil tolerance to garden-bred varieties that have extended the genus's range and appeal.”