The Story
Plant Bio
Inula helenium, commonly known as elecampane, is a robust, clump-forming herbaceous perennial native to Europe and temperate Asia. The plant develops a thick, fleshy rhizome system and produces rigid, hairy stems that reach up to six feet in height.
This species is distinguished by its massive, velvety-backed basal leaves and daisy-like yellow flower heads that span up to nearly four inches across. The coarse, architectural form makes it a commanding presence in naturalized meadows and large border backdrops.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
71"
Width
47"
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Medium
Humidity
Moderate
Lifespan
Perennial
Native To
Europe and Asia
Toxicity
Skin irritant and bitter if ingested raw
Bloom period
Summer
In flower about 3 months of the year
Planting
How to Grow
- Select a planting site in full sun to partial shade with deep, fertile, moisture-retentive soil.
- Dig a hole twice the width of the root ball and incorporate organic compost to improve soil structure.
- Set the plant at the same depth it was growing in the container, backfill, and water thoroughly to settle the roots.
- Space multiple plants at least three feet apart to accommodate their wide, spreading basal foliage.
Pro Tip
Cut the scruffy foliage back to the ground immediately after the midsummer flowering cycle to encourage fresh basal growth and maintain a tidy appearance.
Keep It Thriving
Care Guide
Do
- Provide light staking or support for flowering stems in windy, exposed locations.
- Wear gloves when handling or dividing the roots to prevent contact dermatitis.
- Divide large, congested clumps every three to four years to maintain plant vigor.
Don't
- Do not plant in poorly drained sites where water pools, as wet winter soils cause root rot.
- Avoid over-fertilizing, which leads to weak, floppy stems and excessive foliage at the expense of flowers.
- Do not allow the soil to dry out completely during severe, prolonged summer droughts.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Prune | ||||||||||||
| Stake |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Elecampane questions
What zones can Elecampane grow in?
Elecampane is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Elecampane deer resistant?
Yes — Elecampane is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Elecampane bloom?
Elecampane typically blooms in summer through summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Elecampane need full sun?
Elecampane does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Elecampane drought tolerant?
Yes — once established (usually after the first full season), Elecampane handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Inula to compare
Keep exploring
Explore the genus
Hardy in your zone?
Grow Elecampane with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.