Redroot yampah Plant Care
Perideridia erythrorhiza (Piper) T.I.Chuang & Constance
Updated · Sources · How we source care data
Perideridia erythrorhiza is a rare species of flowering plant in the family Apiaceae known by the common names western yampah and redroot yampah. It is endemic to Oregon in the United States, where there are about 20 occurrences.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Redroot yampah?
Water Redroot yampah every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Redroot yampah Native To?
What Is the Redroot yampah?
Redroot yampah (Perideridia erythrorhiza) belongs to the Apiaceae family within the Perideridia genus. Redroot yampah is native to Oregon in the United States. Redroot yampah is also known as Yampah.
Redroot yampah displays an upright, clumping perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Redroot yampah produces small white or pink umbels.
Leaf size: approximately 6 inches.
How Often Should You Water a Redroot yampah?
Perideridia erythrorhiza 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 Redroot yampah Need?
Redroot yampah thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Redroot yampah Prefer?
Perideridia erythrorhiza grows best at temperatures of 50–80°F. Redroot yampah prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Redroot yampah?
Well-draining sandy loam with good organic content. Good drainage is essential for Redroot yampah to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Redroot yampah?
Feed Redroot yampah 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 Redroot yampah?
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 Redroot yampah?
Redroot yampah can be propagated through seeds, division of rhizomes. Similar propagation techniques also apply to yampah plant care, which shares the same genus.
Is the Redroot yampah Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Redroot yampah, 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 Redroot yampah?
Redroot yampah 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 Redroot yampah Need?
Redroot yampah grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Redroot yampah is native to Oregon in the United States. In cooler regions, grow Redroot yampah as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Redroot yampah 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 Perideridia genus — compare its care with other Perideridia species on PlantoScan.
Perideridia is part of the Apiaceae plant family — browse all Apiaceae genera and species.
Redroot yampah thrives in bright light and direct sun — see other bright-light plants.
More Perideridia Species
Other Perideridia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Perideridia erythrorhiza (Piper) T.I.Chuang & Constance, family Apiaceae (first published in Univ. Calif. Publ. Bot. 55: 71 (1969)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Redroot yampah, 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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