Springville Clarkia Plant Care

Clarkia springvillensis Vasek

Updated · Sources · How we source care data

Clarkia springvillensis is a rare species of flowering plant in the evening primrose family known by the common name Springville clarkia. It is endemic to central Tulare County, California, where it is known from fewer than 20 occurrences around Springville.

Water

Every 7–10 days

Light

Full sun to partial shade

Temp

50–80°F

Humidity

40–60%

At a glance

How do you care for Springville Clarkia?

Plant Springville Clarkia in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 50–80°F (10–27°C). Fertilize it every 6 months during the growing season.

Where Is the Springville Clarkia Native To?

Native range1 country

What Is the Springville Clarkia?

Springville Clarkia (Clarkia springvillensis) belongs to the Onagraceae family within the Clarkia genus. Springville Clarkia is native to central Tulare County, California.

Springville Clarkia displays an upright, branching growth habit, reaching up to 1.5 ft tall with a spread of approximately 0.5 ft. Springville Clarkia produces colorful cup-shaped flowers in shades of pink, red, or purple.

Leaf size: approximately 2 inches.

How Often Should You Water a Springville Clarkia?

Water a young or newly planted Springville Clarkia every 7–10 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 7–10 days

Until established; then in dry spells

What Light Does the Springville Clarkia Need?

Springville Clarkia thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Springville Clarkia Prefer?

Clarkia springvillensis tolerates temperatures of 50–80°F. Springville Clarkia prefers humidity levels of 40–60%.

Temperature

50–80°F

Humidity

40–60%

What Soil Mix Works Best for a Springville Clarkia?

Well-draining, sandy soil with good organic content. Good drainage is essential for Springville Clarkia to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Springville Clarkia?

Feed Springville Clarkia 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 Springville Clarkia?

Choose a spot with full sun to partial shade and well-draining, sandy soil with good organic content. Avoid low spots where water collects after rain.

Springville Clarkia 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 Springville Clarkia?

Springville Clarkia can spread to about 1 ft (0.2 m) and reach about 2 ft (0 m) tall. Space plants about 1 ft (0.2 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 Springville Clarkia?

Prune Springville Clarkia 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 Springville Clarkia in Winter?

Springville Clarkia 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 Springville Clarkia?

Springville Clarkia can be propagated through seeds. Similar propagation techniques also apply to farewell to spring plant care, which shares the same genus.

Is the Springville Clarkia Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Springville Clarkia, 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 Springville Clarkia?

Springville Clarkia is susceptible to aphids, spider mites, whiteflies. 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 Springville Clarkia Need?

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

Hardiness Zone

Zone 12a

Keep exploring plants

Springville Clarkia 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 Clarkia genus — compare its care with other Clarkia species on PlantoScan.

Clarkia is part of the Onagraceae plant family — browse all Onagraceae genera and species.

Springville Clarkia thrives in bright light and direct sun — see other bright-light plants.

More Clarkia Species

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

Sources

  • Scientific name & taxonomy: Clarkia springvillensis Vasek, family Onagraceae (first published in Madroño 17: 220 (1964)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Springville Clarkia, 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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