Soft Premna Plant Care

Soft Premna (Premna mollissima) belongs to the Lamiaceae family within the Premna genus. Soft Premna is native to India, Bangladesh, and Sri Lanka.

Soft Premna displays a compact, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Soft Premna produces small clusters of tiny white or pale pink flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted Soft Premna 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.

Soft Premna thrives in bright indirect light. Avoid placing Soft Premna in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Premna mollissima tolerates temperatures of 65–80°F. Soft Premna prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

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

Feed Soft Premna 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 bright indirect light and well-draining sandy loam with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Soft Premna is suited to USDA Zone 13b.

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.

Soft Premna 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 Soft Premna 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.

Soft Premna is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Soft Premna can be propagated through softwood cuttings, air layering. Similar propagation techniques also apply to premna acuminata plant care, which shares the same genus.

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

Soft Premna 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.

Soft Premna grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Soft Premna is native to India, Bangladesh, and Sri Lanka. In cooler regions, grow Soft Premna as a houseplant or bring it indoors before the first frost.