Evax caulescens Plant Care

Evax caulescens (Hesperevax sparsiflora) belongs to the Asteraceae family within the Hesperevax genus. Evax caulescens is native to California and Oregon. Evax caulescens is also known as Evax sparsiflora.

Evax caulescens displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1.5 ft. Evax caulescens produces small daisy-like flowers in shades of yellow, orange, or red.

Leaf size: approximately 3 inches.

Water a young or newly planted Evax caulescens every 4–7 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.

Evax caulescens thrives in full sun to partial shade.

Hesperevax sparsiflora tolerates temperatures of 50–80°F. Evax caulescens prefers humidity levels of 40–70%.

Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Evax caulescens to prevent waterlogging, which leads to root rot and fungal issues.

Feed Evax caulescens 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.

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

Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Evax caulescens 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.

Evax caulescens can spread to about 2 ft (0.5 m) and reach about 1 ft (0 m) tall. Space plants about 2 ft (0.5 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.

Prune Evax caulescens 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.

Evax caulescens 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.

Evax caulescens can be propagated through seeds, division of root clumps. Similar propagation techniques also apply to california dwarf chamise plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Evax caulescens 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.

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