Hardy perennial. Start indoors 6-8 weeks before last frost or direct sow after last frost. If no germination, move 40˚F for 2-4 weeks (stratify, meaning provide a period of moist chill), then back to 68F for germination. Will grow in partial shade, light woodland. Basal cuttings, sub-terminal or sub-bud, in the spring will root in light shade potted in cold frame, keep moist. Can take 1–2 years to flower. Divide every 3–4 years in the Fall. Seeds require light to germinate, press into soil, do not cover. Soil pH 6.1-7.8. Hardiness zones 3-9. Perennial.
Usual seed life 3–5 years.
Planting Depth surface requires light
Soil Temp. Germ. 65-68˚F
Days to Germ. 14-30 days
Plant Spacing 6-8”
Row Spacing 24”
Days To Maturity 90-120
Full Sun, Moist Well Drained