Troubleshooting
Elecampane problems — and how to fix them
Elecampane (Inula helenium) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Tall stems flopping
In rich soil or shade the heavy flowering stems can lean and topple. Site in full sun, or stake tall clumps early in the season.
Powdery mildew
The large leaves are prone to powdery mildew in late summer, especially when crowded or dry at the root. Space plants, keep soil moist, and improve air circulation.
Drought stress
On dry soils the big leaves wilt and brown at the edges. Mulch the root zone and water through dry spells to keep it lush.
Slow to establish from seed
Seed germinates erratically and young plants take a year or two to reach flowering size. Be patient, or propagate by root division for faster results.
Prevent elecampane problems before they start
Most elecampane issues are care-mismatch, not bad luck. Dial in the basics:
Looking for elecampane in general rather than its problems? Read the full elecampane care guide — light, water, soil and feeding.
Elecampane problems — FAQ
Why is my elecampane tall stems flopping?
In rich soil or shade the heavy flowering stems can lean and topple. Site in full sun, or stake tall clumps early in the season.
Why is my elecampane powdery mildew?
The large leaves are prone to powdery mildew in late summer, especially when crowded or dry at the root. Space plants, keep soil moist, and improve air circulation.
Why is my elecampane drought stress?
On dry soils the big leaves wilt and brown at the edges. Mulch the root zone and water through dry spells to keep it lush.
Why is my elecampane slow to establish from seed?
Seed germinates erratically and young plants take a year or two to reach flowering size. Be patient, or propagate by root division for faster results.