Showy Coneflower Plant Care

Showy Coneflower (Isopogon formosus) belongs to the Proteaceae family within the Isopogon genus. Showy Coneflower is native to the south-west of Western Australia. Showy Coneflower is also known as Mountain Rose, Rose Coneflower, Bearded Coneflower.

Showy Coneflower displays a compact shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Showy Coneflower produces small, colorful cylindrical flowers in clusters.

Leaf size: approximately 4 inches.

Water a young or newly planted Showy Coneflower 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.

Showy Coneflower thrives in full sun to partial shade.

Isopogon formosus tolerates temperatures of 50–80°F. Showy Coneflower prefers humidity levels of 40–70%.

Well-draining, acidic soil mix with added sand and perlite. Good drainage is essential for Showy Coneflower to prevent waterlogging, which leads to root rot and fungal issues.

Feed Showy Coneflower 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, acidic soil mix with added sand and perlite. Avoid low spots where water collects after rain.

Showy Coneflower 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.

Showy Coneflower can spread to about 2 ft (0.6 m) and reach about 3 ft (1 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.

Prune Showy Coneflower 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.

Showy Coneflower 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.

Showy Coneflower can be propagated through seeds, cuttings. Similar propagation techniques also apply to adenanthos-leaved conebush plant care, which shares the same genus.

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Showy Coneflower is susceptible to aphids, scale insects. 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.

Showy Coneflower grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Showy Coneflower is native to the south-west of Western Australia. In cooler regions, grow Showy Coneflower as a houseplant or bring it indoors before the first frost.