Hemlock water dropwort (Oenanthe crocata)

Care, watering, light and tips for Hemlock water dropwort on Floravia.

Hemlock water dropwort

Quick facts

About Hemlock water dropwort

Oenanthe crocata, also known as hemlock water-dropwort, is a robust perennial herbaceous plant belonging to the Apiaceae family, native to Europe and North Africa. It is characterized by its hollow, ridged, pale green stems, which can reach up to 1.5 meters in height, and its large umbels of white or slightly pinkish flowers. While attractive in naturalized settings or pond edges, it is crucial to remember that all its parts are extremely poisonous.

Native range

Western Europe and North Africa

Care tips

Given its extreme toxicity, cultivating Oenanthe crocata is not recommended in home gardens or where contact with children or pets is possible. If found in its natural habitat, it prefers moist to boggy soils, often near watercourses, and tolerates both full sun exposure and partial shade. It requires no specific care beyond its natural environment, but it is vital to avoid any direct handling without proper protection. A common and dangerous mistake is to confuse its tuberous roots with edible plants.

How to save a dying Hemlock water dropwort

Warning signs
Wilting or yellowing leaves, soft stems, musty smell from soil.
First aid
Remove plant from waterlogged soil. Cut off rotten roots. Replant in dry, well-draining soil.
What kills it
Excessive moisture is deadly. This plant is highly toxic, do not ingest or handle without gloves!
Can it be saved?
Yes, if addressed quickly and waterlogging is corrected. Its toxicity is a real risk.

Open in Floravia — reminders and AI advice