Skill Level: Beginner
Berkheya purpurea is a striking, thistle like perennial from the high grasslands of South Africa, where cool nights, bright sun, and lean soils shape its tough, architectural character. Its bold, silver green, spiny foliage forms a handsome basal rosette, and in summer it sends up 36” tall stems topped with luminous lavender purple daisies that hover above the plant like an armoured orb – soft but with attitude. Despite its exotic origins, it’s surprisingly easy to grow in the Pacific Northwest, provided it has excellent drainage. The rosettes are hardy and resilient, but they dislike sitting in cold, stagnant winter moisture; in a raised bed, gravelly border, or sunny slope, they overwinter beautifully and return with renewed vigor each spring.
Our Seed Germination Experience
Seed germination is straightforward and beginner friendly. Sow at any time, cover lightly, and keep at ordinary room temperature; seedlings usually appear in 10–20 days. Young plants grow steadily through their first season, forming sturdy rosettes, and most will flower in their second year from seed, occasionally the first if started early and grown on well.
Photo: powo.science.kew.org
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