Stebbins' lewisia Plant Care

Lewisia stebbinsii Gankin & W.R.Hildreth

Updated · Sources · How we source care data

Lewisia stebbinsii is a rare species of flowering plant in the family Montiaceae known by the common name Stebbins' lewisia. It is endemic to California, where it is known from less than fifteen sites in the Inner North Coast Ranges of Mendocino and Trinity Counties, mainly in Mendocino National Forest.

Water

Every 7–14 days

Light

Full sun to partial shade

Temp

50–75°F

Humidity

40–60%

At a glance

How do you care for Stebbins' lewisia?

Plant Stebbins' lewisia in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–14 days until it is established. It tolerates temperatures of 50–75°F (10–24°C). Fertilize it every 6 months during the growing season.

Where Is the Stebbins' lewisia Native To?

Native range1 country

What Is the Stebbins' lewisia?

Stebbins' lewisia (Lewisia stebbinsii) belongs to the Montiaceae family within the Lewisia genus. Stebbins' lewisia is native to California. Stebbins' lewisia is also known as Stebbins' bitterroot.

Stebbins' lewisia displays a low rosette, clumping habit growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Stebbins' lewisia produces showy, star-shaped flowers in various colors like pink, red, orange, or yellow.

Leaf size: approximately 2 inches.

How Often Should You Water a Stebbins' lewisia?

Water a young or newly planted Stebbins' lewisia every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Watering Frequency

Every 7–14 days

Until established; then in dry spells

What Light Does the Stebbins' lewisia Need?

Stebbins' lewisia thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Stebbins' lewisia Prefer?

Lewisia stebbinsii tolerates temperatures of 50–75°F. Stebbins' lewisia prefers humidity levels of 40–60%.

Temperature

50–75°F

Humidity

40–60%

What Soil Mix Works Best for a Stebbins' lewisia?

Well-draining sandy soil with added organic matter like peat moss or compost. Good drainage is essential for Stebbins' lewisia to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Stebbins' lewisia?

Feed Stebbins' lewisia every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

Fertilizing

Every 6 months

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

Where Should You Plant a Stebbins' lewisia?

Choose a spot with full sun to partial shade and well-draining sandy soil with added organic matter like peat moss or compost. Avoid low spots where water collects after rain.

Stebbins' lewisia is suited to USDA Zone 12a.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

How Far Apart Should You Plant a Stebbins' lewisia?

Stebbins' lewisia can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

How Do You Prune a Stebbins' lewisia?

Prune Stebbins' lewisia while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

How Do You Care for a Stebbins' lewisia in Winter?

Stebbins' lewisia is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

How Do You Propagate a Stebbins' lewisia?

Stebbins' lewisia can be propagated through seeds, division of offsets. Similar propagation techniques also apply to columbian lewisia plant care, which shares the same genus.

Is the Stebbins' lewisia Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Stebbins' lewisia, 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 Stebbins' lewisia?

Stebbins' lewisia is susceptible to aphids, slugs, snails. 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 Stebbins' lewisia Need?

Stebbins' lewisia grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Stebbins' lewisia is native to California. In cooler regions, grow Stebbins' lewisia as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Stebbins' lewisia 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 Lewisia genus — compare its care with other Lewisia species on PlantoScan.

Lewisia is part of the Montiaceae plant family — browse all Montiaceae genera and species.

Stebbins' lewisia thrives in bright light and direct sun — see other bright-light plants.

More Lewisia Species

Other Lewisia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Lewisia stebbinsii Gankin & W.R.Hildreth, family Montiaceae (first published in Four Seasons 2(4): 13 (1968)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Stebbins' lewisia, 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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