Roughseed Aster Plant Care

Roughseed Aster (Pityopsis aspera) belongs to the Asteraceae family within the Pityopsis genus. Roughseed Aster is native to the southeastern United States. Roughseed Aster is also known as Hairy Aster.

Roughseed Aster displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1.5 ft. Roughseed Aster produces small yellow daisy-like flowers in clusters.

Leaf size: approximately 3 inches.

Water a young or newly planted Roughseed Aster 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.

Roughseed Aster thrives in full sun to partial shade.

Pityopsis aspera tolerates temperatures of 50–80°F. Roughseed Aster prefers humidity levels of 40–70%.

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

Feed Roughseed Aster 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.

Roughseed Aster 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.

Roughseed Aster 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 Roughseed Aster 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.

Roughseed Aster 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.

Roughseed Aster can be propagated through seeds, division of clumps. Similar propagation techniques also apply to sickleleaf aster plant care, which shares the same genus.

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

Roughseed Aster 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.

Roughseed Aster grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Roughseed Aster is native to the southeastern United States. In cooler regions, grow Roughseed Aster as a houseplant or bring it indoors before the first frost.