Potentilla (P)
Potentilla thurberi maorubens
Perennial. Hardy in zones 5-8.
Long-lived perennial. Pre-chill the seed to 5°C (40°F) for three weeks before sowing. Start seeds indoors eight to ten weeks before last frost. Cover the seed lightly with vermiculite and propagate at 15 to 20°C (59-68°F). Seeds should germinate in 3 to 4 weeks. Grow the seedlings on at 10 to 15°C (50-59°F). Plant out after fear of frost is past, into a full sun location, 18 inches apart. Prefers well-drained, average soil. Can be divided every 3-4 years in spring or fall.
