Troubleshooting
Jerusalem Artichoke problems — and how to fix them
Jerusalem Artichoke (Helianthus tuberosus 'Fuseau') 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.
Invasive spreading
Any tuber fragment left at harvest regrows, so it colonises a bed fast. Plant in a contained spot or dedicated bed, and dig thoroughly each year.
Tall stems toppling in wind
The 2-3 m stems are top-heavy and blow over in exposed sites. Site against a fence or stake, and avoid over-feeding with nitrogen.
Powdery mildew on leaves
Common on the foliage late in summer. Largely cosmetic and rarely affects the tuber crop; improve spacing for airflow.
Slug and rodent damage to tubers
Slugs, voles and mice nibble tubers left in the ground over winter. Lift as needed and store the rest in damp sand if rodents are a problem.
Prevent jerusalem artichoke problems before they start
Most jerusalem artichoke issues are care-mismatch, not bad luck. Dial in the basics:
- Common jerusalem artichoke problems — the species this cultivar belongs to
- Common jerusalem artichoke problems — our other guide for the same plant
- What's wrong with my plant? — the diagnosis apps compared
- Jerusalem Artichoke watering schedule
- Jerusalem Artichoke light requirements
- Best soil mix for jerusalem artichoke
- Jerusalem Artichoke temperature & humidity
- Full jerusalem artichoke care guide
Looking for jerusalem artichoke in general rather than its problems? Read the full jerusalem artichoke care guide — light, water, soil and feeding.
Jerusalem Artichoke problems — FAQ
Why is my jerusalem artichoke invasive spreading?
Any tuber fragment left at harvest regrows, so it colonises a bed fast. Plant in a contained spot or dedicated bed, and dig thoroughly each year.
Why is my jerusalem artichoke tall stems toppling in wind?
The 2-3 m stems are top-heavy and blow over in exposed sites. Site against a fence or stake, and avoid over-feeding with nitrogen.
Why is my jerusalem artichoke powdery mildew on leaves?
Common on the foliage late in summer. Largely cosmetic and rarely affects the tuber crop; improve spacing for airflow.
Why is my jerusalem artichoke slug and rodent damage to tubers?
Slugs, voles and mice nibble tubers left in the ground over winter. Lift as needed and store the rest in damp sand if rodents are a problem.