Slender Vervain

A lovely plant for mild areas, Verbena rigida is a bushy, clump-forming, deciduous, tuberous perennial with a neat, low habit and oblong, mid-green leaves. From June to September, clusters of bright purple, typical vervain flowers rise above the foliage, giving a jewel-like effect, particularly lovely with silvery or grey foliage plants. Not for cold areas, but may survive winter in very mild, coastal areas with a deep dry mulch; alternatively, grow it as an annual. Slender vervain holds the RHS Award of Garden Merit.

Site: Sheltered, sunny site
Soil: Any moist but well-drained soil
Position: Full sun
Season of interest: June to September
Hardiness: Half-hardy
Height: 2’ (60cm) Spread: 16” (40cm)