Tauschia howellii Plant Care
Tauschia howellii (J.M.Coult. & Rose) J.F.Macbr.
Updated · Sources · How we source care data
Tauschia howellii is a rare species of flowering plant in the carrot family known by the common names Howell's umbrellawort and Howell's tauschia. It is endemic to the Klamath Mountains of far southern Oregon and far northern California, where it is limited to nine occurrences in the Siskiyou Mountains.
Every 7–10 days
Partial shade to full sun
50–75°F
40–60%
At a glance
How do you care for Tauschia howellii?
Water Tauschia howellii every 7–10 days, letting the top layer of soil dry out between waterings, and give it partial shade to full sun. It prefers temperatures of 50–75°F (10–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Tauschia howellii Native To?
What Is the Tauschia howellii?
Tauschia howellii (Tauschia howellii) belongs to the Apiaceae family within the Tauschia genus. Tauschia howellii is native to the Klamath Mountains of far southern Oregon and far northern California.
Tauschia howellii displays a clumping perennial herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Tauschia howellii produces small clusters of white or pink flowers in umbrella-shaped inflorescences.
Leaf size: approximately 4 inches.
How Often Should You Water a Tauschia howellii?
Tauschia howellii requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the Tauschia howellii Need?
Tauschia howellii thrives in partial shade to full sun.
Light Requirement
Partial shade to full sun
What Temperature and Humidity Does the Tauschia howellii Prefer?
Tauschia howellii grows best at temperatures of 50–75°F. Tauschia howellii prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Tauschia howellii?
Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Tauschia howellii to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Tauschia howellii?
Feed Tauschia howellii 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 Tauschia howellii?
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 Tauschia howellii?
Tauschia howellii can be propagated through seeds, division of root ball. Similar propagation techniques also apply to tauschia arguta plant care, which shares the same genus.
Is the Tauschia howellii Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Tauschia howellii, 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 Tauschia howellii?
Tauschia howellii is susceptible to aphids, spider mites, powdery mildew. 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 Tauschia howellii Need?
Tauschia howellii grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Tauschia howellii is native to the Klamath Mountains of far southern Oregon and far northern California. In cooler regions, grow Tauschia howellii as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Tauschia howellii 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 Tauschia genus — compare its care with other Tauschia species on PlantoScan.
Tauschia is part of the Apiaceae plant family — browse all Apiaceae genera and species.
Tauschia howellii thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Tauschia howellii (J.M.Coult. & Rose) J.F.Macbr., family Apiaceae (first published in Contr. Gray Herb. 56: 32 (1918)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Tauschia howellii, 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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