Elecampane

Herbaceous

Elecampane

Inula helenium

Also known as: Horseheal, Elf Dock

Herbaceous Asteraceae MedicinalPollinatorWildlife AttractorDynamic AccumulatorBiomass
Hardiness Zone
4-9
Ideal Temp
50–78°F
Survives Down To
-30°F
Life Cycle
Perennial

Elecampane (*Inula helenium*) is a robust perennial herb from Eurasia, naturalized in parts of North America, with large basal leaves and towering yellow daisy flowers on stems that can exceed 6 feet. Roots are thick, aromatic, and long used in herbal traditions. In subtropical and tropical Americas it is a specialty plant for morning sun, rich soil, and steady moisture—expect shorter stature and possible mildew if air circulation is poor in the wet season. 🌞💧 **Sun and Water Requirements:** Full sun to bright partial shade. Keep soil evenly moist but not boggy; a deep organic mulch buffers heat. Afternoon shade helps in lowland tropical humidity. ✂️ **Methods to Propagate:** - **Root divisions:** Split crowns in early spring or fall; replant pieces with buds facing up. - **Seeds:** Sow fresh seed on the surface, press in, and keep warm and humid; transplant when true leaves appear. 🧑‍🌾 **When to Harvest:** Dig roots in fall of the second or third year after growth slows; wash, slice, and dry with good airflow. Flowers can be collected at full yellow disk stage for tinctures or drying if desired.

Good Neighbors
  • Yarrow
  • Comfrey
  • Echinacea
Known Threats — Organic Solutions Only
Aphids
Aphidoidea
Banded Winged Whitefly
Trialeurodes abutiloneus
Greenhouse Whitefly
Trialeurodes vaporariorum
Japanese Beetles
Popillia japonica
Lettuce Aphid
Nasonovia ribisnigri
Lubber Grasshopper
Romalea microptera
Powdery Mildew
Erysiphales
Root Aphid
Pemphigus spp.