Elecampane (Inula helenium) is a perennial herb that forms erect, branching stalks and bright yellow flowers from mid to late summer. Established plants produce roots harvested in fall, while the roots and flowers can be used for natural dyeing.
Sow the seeds on the soil surface because they need light to germinate. Start indoors 6–10 weeks before the last frost or sow outdoors in mid-spring once the soil reaches 55–60°F. Transplant after frost.
Features
Perennial herb
Medicinal herb
Natural dye plant
Attracts bees and beneficial insects
Soil: Average to fertile, well-drained soil
Light: Full sun
Harvest: Roots in fall from established 2–3-year-old plants
Spacing: 18–24 inches
Flowering: Mid to late summer
Germination: 14–40 days
Sowing depth: Surface sow; seeds need light
Botanical name: Inula helenium
Outdoor sowing: Mid-spring at 55–60°F soil temperature
Seeds per packet: 50
Starting indoors: 6–10 weeks before the last frost
Germination temperature: 65–70°F
Mature height and width: 5–8 feet × 2–4 feet
Seller: Seed & Bulb
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Customer Reviews
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★★★★★★★★★★5.0
y**c
Verified
Tall and healthy looking already, curious to see the flowers.
