Echinops ‘Ritro Blue’
Echinops are hardy garden perennials that thrive in a free-draining soil. Improve soil to a depth of at least 30cm before planting, and if drainage is an issue, plant in raised beds. Divide every 3-4 years to maintain healthy vigorous growth and prolific flowering. Prune back after flowering in late autumn. Avoid waterlogged or wet soils.