Clayton's sweetroot Plant Care
Osmorhiza claytonii C.B.Clarke
Updated · Sources · How we source care data
Osmorhiza claytonii is a North American perennial herb, native to Canada and the eastern United States. It is also known as Clayton's sweetroot, sweet cicely, or woolly sweet cicely a name it shares with other members of its genus Osmorhiza.
Every 4–7 days
Partial to full shade
50–75°F
40–70%
At a glance
How do you care for Clayton's sweetroot?
Water Clayton's sweetroot every 4–7 days, letting the top layer of soil dry out between waterings, and give it partial to full shade. It prefers temperatures of 50–75°F (10–24°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Clayton's sweetroot Native To?
What Is the Clayton's sweetroot?
Clayton's sweetroot (Osmorhiza claytonii) belongs to the Apiaceae family within the Osmorhiza genus. Clayton's sweetroot is native to Canada and the eastern United States. Clayton's sweetroot is also known as Hairy sweetroot, Sweetroot, Wild chervil.
Clayton's sweetroot displays a clumping herbaceous perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Clayton's sweetroot produces small white or greenish flowers in umbels.
Leaf size: approximately 6 inches.
How Often Should You Water a Clayton's sweetroot?
Osmorhiza claytonii requires watering every 4–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 4–7 days
Let soil partially dry between waterings
What Light Does the Clayton's sweetroot Need?
Clayton's sweetroot thrives in partial to full shade. The optimal light range is 100–500 lux. Avoid placing Clayton's sweetroot in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
100–500 lux
What Temperature and Humidity Does the Clayton's sweetroot Prefer?
Osmorhiza claytonii grows best at temperatures of 50–75°F. Clayton's sweetroot prefers humidity levels of 40–70%.
Temperature
50–75°F
Humidity
40–70%
What Soil Mix Works Best for a Clayton's sweetroot?
Rich, moist, well-draining soil with high organic content. Good drainage is essential for Clayton's sweetroot to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Clayton's sweetroot?
Feed Clayton's sweetroot every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Clayton's sweetroot?
Divide and repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Clayton's sweetroot?
Clayton's sweetroot can be propagated through seeds, division of rhizomes. Similar propagation techniques also apply to anise root plant care, which shares the same genus.
Is the Clayton's sweetroot Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Clayton's sweetroot, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Clayton's sweetroot?
Clayton's sweetroot is susceptible to aphids, caterpillars, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Clayton's sweetroot Need?
Clayton's sweetroot grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Clayton's sweetroot is native to Canada and the eastern United States. In cooler regions, grow Clayton's sweetroot as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Clayton's sweetroot is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Osmorhiza genus — compare its care with other Osmorhiza species on PlantoScan.
Osmorhiza is part of the Apiaceae plant family — browse all Apiaceae genera and species.
Clayton's sweetroot copes with lower light than most plants — browse the full list of low-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Osmorhiza claytonii C.B.Clarke, family Apiaceae (first published in Fl. Brit. India 2: 690 (1879)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Clayton's sweetroot, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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