Western Sweet Cicely Plant Care
Osmorhiza occidentalis Torr.
Updated · Sources · How we source care data
Osmorhiza occidentalis is a species of flowering plant in the family Apiaceae known by the common name western sweet cicely or western sweetroot.
Every 4–7 days
Partial to full shade
50–75°F
40–70%
At a glance
How do you care for Western Sweet Cicely?
Water Western Sweet Cicely 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.
What Is the Western Sweet Cicely?
Western Sweet Cicely (Osmorhiza occidentalis) belongs to the Apiaceae family within the Osmorhiza genus. Western Sweet Cicely is also known as Sweet Cicely, Mountain Sweet Cicely.
Western Sweet Cicely displays a clumping herbaceous perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Western Sweet Cicely produces small white or greenish flowers in umbels.
Leaf size: approximately 6 inches.
How Often Should You Water a Western Sweet Cicely?
Osmorhiza occidentalis 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 Western Sweet Cicely Need?
Western Sweet Cicely thrives in partial to full shade. The optimal light range is 100–500 lux. Avoid placing Western Sweet Cicely 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 Western Sweet Cicely Prefer?
Osmorhiza occidentalis grows best at temperatures of 50–75°F. Western Sweet Cicely prefers humidity levels of 40–70%.
Temperature
50–75°F
Humidity
40–70%
What Soil Mix Works Best for a Western Sweet Cicely?
Rich, moist, well-draining soil with high organic content. Good drainage is essential for Western Sweet Cicely to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Western Sweet Cicely?
Feed Western Sweet Cicely 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 Western Sweet Cicely?
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 Western Sweet Cicely?
Western Sweet Cicely 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 Western Sweet Cicely Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Western Sweet Cicely, 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 Western Sweet Cicely?
Western Sweet Cicely 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 Western Sweet Cicely Need?
Western Sweet Cicely grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Western Sweet Cicely as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Western Sweet Cicely 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.
Western Sweet Cicely 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 occidentalis Torr., family Apiaceae (first published in Rep. U.S. Mex. Bound. 2(1): 71 (1858)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Western Sweet Cicely, 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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