12–15" tall. Round dense clusters of deep purple star-shaped flowers held above tidy upright clumps of strappy glossy grey-green foliage. Sweet-scented blooms make great cutflowers or dried winter arrangements whether you cut them before or after the green seed pods form. Attracts beneficial insects with its sweet nectar yet repels an array of undesirables—slithery, winged and legged pests alike—including deer. Only if crushed will the plants smell like an onion. Adds rugged charm and vertical structure to herb and rock gardens.
Full to partial sun, soil adaptable, tolerates clay. Blooms in mid to late summer. Z4.
(bare-root crowns)
ships in spring