Crinum

Crinum is a genus of flowering plants in the amaryllis family (Amaryllidaceae). Common names include crinum lilies and swamp lilies. The genus is native to tropical and subtropical regions of Africa, Asia, and the Americas and comprises around 60–80 species, though the exact count varies with classification. Many species and cultivars are grown as ornamentals in warm climates.

Crinum plants are herbaceous perennials that grow from bulbs or rhizomes. They have strap-shaped, evergreen leaves and produce tall flowering stalks bearing large, funnel- or trumpet-shaped flowers. Flowers are typically arranged in loose umbels and can be white, pink, red, or purple, often with contrasting throats or stripes. Bloom time is mainly summer, though some species may flower at other times in tropical conditions.

Cultivation: Crinum prefers sunny positions and moist, well-drained soil. Many species tolerate wet soils and are used in garden borders, wetlands, or containers. They are hardy mainly in warm climates (commonly USDA zones 8–11); some hybrids extend tolerance to cooler areas with winter protection. They propagate by offsets from the bulb or rhizome and by seed.

Pests and problems: common pests include slugs and snails; bulb rot can occur in poorly drained soil. Some leaf diseases may occur in humid conditions.

Notable species include Crinum americanum, Crinum asiaticum, Crinum bulbosum, and Crinum moorei, among others. The plant is valued for its large, striking flowers and tropical appearance.