Sowing and Growing Notes
Sow in late fall onto a firmed, weed-free surface in full sun and let winter provide the cold period, or refrigerate the seed in damp sand for about a month before a spring sowing. The seed is very fine and needs light, so press it in rather than covering it. Only sow it where a spreading colony is what you want.
Water: Low
Sun: Full Sun
Soil: Adaptable; tolerates lean soil, spreads aggressively by rhizome
Mature size: W Spreading x H 3'-5'
Maintenance
Expect foliage in the first year and flowers from the second. Once established it spreads by rhizome and will need an annual edging to stay in bounds. Leave the stems through winter and cut back in late spring.