Troubleshooting
Valerian problems — and how to fix them
Valerian (Valeriana officinalis) 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.
Aggressive self-seeding
Valerian sets copious seed and can spread well beyond its spot. Deadhead spent flower heads before seed ripens to keep it in bounds.
Tall stems flopping
The slender flowering stems can lean in rich soil, wind, or shade. Site in sun and stake or grow through supports if needs be.
Cats disturbing plants
The root's scent attracts cats, which may roll on or dig up plantings much as they do with catnip. Protect young plants if neighbourhood cats are a nuisance.
Drought stress
On dry soils the foliage wilts and browns. Mulch and water through dry spells to keep it vigorous and well-flowered.
Prevent valerian problems before they start
Most valerian issues are care-mismatch, not bad luck. Dial in the basics:
Looking for valerian in general rather than its problems? Read the full valerian care guide — light, water, soil and feeding.
Valerian problems — FAQ
Why is my valerian aggressive self-seeding?
Valerian sets copious seed and can spread well beyond its spot. Deadhead spent flower heads before seed ripens to keep it in bounds.
Why is my valerian tall stems flopping?
The slender flowering stems can lean in rich soil, wind, or shade. Site in sun and stake or grow through supports if needs be.
Why is my valerian cats disturbing plants?
The root's scent attracts cats, which may roll on or dig up plantings much as they do with catnip. Protect young plants if neighbourhood cats are a nuisance.
Why is my valerian drought stress?
On dry soils the foliage wilts and browns. Mulch and water through dry spells to keep it vigorous and well-flowered.