Large Leaf Mountain Daisy Plant Care

Large Leaf Mountain Daisy (Celmisia semicordata) belongs to the Asteraceae family within the Celmisia genus. Large Leaf Mountain Daisy is native to alpine environments of the South Island of New Zealand.

Large Leaf Mountain Daisy displays a low rosette, clumping growth habit, reaching up to 1.5 ft tall with a spread of approximately 1.5 ft. Large Leaf Mountain Daisy produces daisy-like flowers in white, pink, or purple.

Leaf size: approximately 6 inches.

Water a young or newly planted Large Leaf Mountain Daisy 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.

Large Leaf Mountain Daisy thrives in full sun to partial shade.

Celmisia semicordata tolerates temperatures of 50–75°F. Large Leaf Mountain Daisy prefers humidity levels of 40–70%.

Well-draining sandy soil mix with added organic matter. Good drainage is essential for Large Leaf Mountain Daisy to prevent waterlogging, which leads to root rot and fungal issues.

Feed Large Leaf Mountain Daisy 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 soil mix with added organic matter. Avoid low spots where water collects after rain.

Large Leaf Mountain Daisy is suited to USDA Zone 8a – 9b.

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.

Large Leaf Mountain Daisy can spread to about 2 ft (0.5 m) and reach about 2 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 Large Leaf Mountain Daisy 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.

Large Leaf Mountain Daisy is hardy down to USDA zone 8a, so once established it can stay outdoors through winter in that zone and warmer ones.

Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.

Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.

Large Leaf Mountain Daisy can be propagated through seeds, division of clumps. Similar propagation techniques also apply to narrow-leafed mountain daisy plant care, which shares the same genus.

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

Large Leaf Mountain Daisy is susceptible to aphids, slugs, snails. 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.

Large Leaf Mountain Daisy grows outdoors in USDA Zone 8a – 9b. It survives winters down to planting zone 8a. Large Leaf Mountain Daisy is native to alpine environments of the South Island of New Zealand.