Thurber's Wedgeleaf Plant Care
Centrostegia thurberi A.Gray ex Benth.
Updated · Sources · How we source care data
Centrostegia is a monotypic genus of plants in the family Polygonaceae. Its sole species is Centrostegia thurberi, known by the common names Thurber's spineflower and red triangles.
Every 7–10 days
Partial to full sun
60–80°F
40–70%
At a glance
How do you care for Thurber's Wedgeleaf?
Water Thurber's Wedgeleaf every 7–10 days, letting the top layer of soil dry out between waterings, and give it partial to full sun. It prefers temperatures of 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Thurber's Wedgeleaf Native To?
What Is the Thurber's Wedgeleaf?
Thurber's Wedgeleaf (Centrostegia thurberi) belongs to the Polygonaceae family within the Centrostegia genus. Thurber's Wedgeleaf is native to the southwestern United States and northwestern Mexico.
Thurber's Wedgeleaf displays a clumping perennial herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1.5 ft. Thurber's Wedgeleaf produces small clusters of inconspicuous flowers.
Leaf size: approximately 4 inches.
How Often Should You Water a Thurber's Wedgeleaf?
Centrostegia thurberi 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 Thurber's Wedgeleaf Need?
Thurber's Wedgeleaf thrives in partial to full sun.
Light Requirement
Partial to full sun
What Temperature and Humidity Does the Thurber's Wedgeleaf Prefer?
Centrostegia thurberi grows best at temperatures of 60–80°F. Thurber's Wedgeleaf prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Thurber's Wedgeleaf?
Well-draining loamy soil with added organic matter. Good drainage is essential for Thurber's Wedgeleaf to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Thurber's Wedgeleaf?
Feed Thurber's Wedgeleaf 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 Thurber's Wedgeleaf?
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 Thurber's Wedgeleaf?
Thurber's Wedgeleaf can be propagated through seeds, division of root clumps.
Is the Thurber's Wedgeleaf Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Thurber's Wedgeleaf, 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 Thurber's Wedgeleaf?
Thurber's Wedgeleaf is susceptible to aphids, spider mites, leaf miners. 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 Thurber's Wedgeleaf Need?
Thurber's Wedgeleaf grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Thurber's Wedgeleaf is native to the southwestern United States and northwestern Mexico. In cooler regions, grow Thurber's Wedgeleaf as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Thurber's Wedgeleaf 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 Centrostegia genus — compare its care with other Centrostegia species on PlantoScan.
Centrostegia is part of the Polygonaceae plant family — browse all Polygonaceae genera and species.
Thurber's Wedgeleaf 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: Centrostegia thurberi A.Gray ex Benth., family Polygonaceae (first published in Prodr. [A. P. de Candolle] 14(1): 27. 1856; et in Pacif. Rail. Rep. 7: 20. [mid Oct 1856]) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Thurber's Wedgeleaf, 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 13a, 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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