Elecampane, a perennial, grows to 8 feet tall with many side branches with numerous bright yellow flowers from mid to late summer. Roots are used medicinally as an expectorant with antibacterial and antifungal properties. As a dye plant, the roots yield a blue dye and the flowers a yellow-orange dye.
Germination: 14-40 days
Germination Temperature: Optimum soil temperatures 65-70ºF
Seed Planting Depth: Sow on the surface, seeds need light to germinate
Starting Indoors: Start indoors 6-10 weeks before the last frost. Provide 65-70ºF soil temperatures. Transplant after the last frost, 18-24” apart
Sowing Outdoors: Mid-spring when the soil temperature reaches 55-60ºF. Sow a few seeds every 18-24" apart or sow 1-2" apart in a row then transplant to the desired location.
Growth Habit: Erect stalks, branching
Height and Width: 5-8’ x 2-4’
Spacing: 18-24” apart
Light Needs: Full sun
Soil Needs: Elecampane needs average to fertile, well-drained soil
Flowering: Mid to late summer
Harvest: In the fall, roots of established 2-3 year old plants
Uses: Medicinal, flowers attract bees and beneficial insects