Encelia scaposa Plant Care

Encelia scaposa A.Gray

Updated · Sources · How we source care data

Encelia scaposa, common name onehead brittlebush is a North American species of flowering plants in the family Asteraceae. It has been found in western Texas, southwestern New Mexico, and Chihuahua.

🌱Herbs🌼Perennials🌻Annuals
Water

Every 7–14 days

Light

Full sun

Temp

50–90°F

Humidity

30–60%

At a glance

How do you care for Encelia scaposa?

Plant Encelia scaposa in full sun (USDA zones 12a) and water a young shrub every 7–14 days until it is established. It tolerates temperatures of 50–90°F (10–32°C). Fertilize it every 6 months during the growing season.

Where Is the Encelia scaposa Native To?

Native range2 countries

What Is the Encelia scaposa?

Encelia scaposa (Encelia scaposa) belongs to the Asteraceae family within the Encelia genus. Encelia scaposa is native to western Texas, southwestern New Mexico, and Chihuahua.

Encelia scaposa displays a low, spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Encelia scaposa produces bright yellow daisy-like flowers.

Leaf size: approximately 3 inches.

How Often Should You Water a Encelia scaposa?

Water a young or newly planted Encelia scaposa 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 Encelia scaposa Need?

Encelia scaposa thrives in full sun.

Light Requirement

Full sun

What Temperature and Humidity Does the Encelia scaposa Prefer?

Encelia scaposa tolerates temperatures of 50–90°F. Encelia scaposa prefers humidity levels of 30–60%.

Temperature

50–90°F

Humidity

30–60%

What Soil Mix Works Best for a Encelia scaposa?

Well-draining sandy soil mix with some organic matter. Good drainage is essential for Encelia scaposa to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Encelia scaposa?

Feed Encelia scaposa 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 Encelia scaposa?

Choose a spot with full sun and well-draining sandy soil mix with some organic matter. Avoid low spots where water collects after rain.

Encelia scaposa 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 Encelia scaposa?

Encelia scaposa can spread to about 2 ft (0.6 m) and reach about 2 ft (0 m) tall. Space plants about 2 ft (0.6 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 Encelia scaposa?

Prune Encelia scaposa 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 Encelia scaposa in Winter?

Encelia scaposa 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 Encelia scaposa?

Encelia scaposa can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to california brittlebush plant care, which shares the same genus.

Is the Encelia scaposa Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Encelia scaposa, 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 Encelia scaposa?

Encelia scaposa is susceptible to aphids, whiteflies, 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 Encelia scaposa Need?

Encelia scaposa grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Encelia scaposa is native to western Texas, southwestern New Mexico, and Chihuahua. In cooler regions, grow Encelia scaposa as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Encelia scaposa 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 Encelia genus — compare its care with other Encelia species on PlantoScan.

Encelia is part of the Asteraceae plant family — browse all Asteraceae genera and species.

Encelia scaposa thrives in bright light and direct sun — see other bright-light plants.

More Encelia Species

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

Sources

  • Scientific name & taxonomy: Encelia scaposa A.Gray, family Asteraceae (first published in Proc. Amer. Acad. Arts viii. (1873) 657.) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Encelia scaposa, 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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