- Position: full sun
- Soil: moderatley fertile, moist but well-drained soil
- Rate of growth: average
- Flowering period: June to August
- Hardiness: frost hardy (may need winter protection)
- Garden care: To prolong flowering remove the flower spikes as soon they start to fade. Apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant in spring. Protect from excessive cold and waterlogged soils.