Kniphofia

A bold, clump-forming South African perennial grown the world over for its dramatic torch-like flower spikes — tight rockets of tubular blooms that open from the top down, glowing from coral-red buds through orange to yellow, held well above a fountain of grassy, arching leaves in summer. Hence its names, "red-hot poker" and "torch lily." Unusually for a South African plant it is quite hardy, surviving to roughly USDA zone 5 where drainage is sharp, but it RESENTS WET WINTER SOIL and rots in heavy, poorly drained ground, so the whole knack to growing it is full sun and free drainage. Its nectar-rich tubular flowers are a magnet for nectar-feeding BIRDS — sunbirds in its native range, hummingbirds in the Americas — and for bees. POWO (Kew) records it as native to the Cape provinces of South Africa; it is grown strictly as an ornamental and is not eaten.

Kniphofia rooperi is a robust, evergreen South African perennial endemic to the Eastern Cape, grown for its striking autumn torches of scarlet-to-orange-yellow tubular flowers on tall stems over strap-shaped foliage — one of the last red-hot pokers to bloom and a holder of the RHS Award of Garden Merit. It fits well as a bold focal point or late-season pollinator plant in the mixed border. The honest catch is drainage: this species demands reliably moist yet sharply well-drained soil — too dry and the flowerheads abort, too wet in winter and the crown rots; heavy clay or boggy ground without amendment is a hard no.