Large Flowered Selfheal Plant Care

Large Flowered Selfheal (Prunella grandiflora) belongs to the Lamiaceae family within the Prunella genus. Large Flowered Selfheal is native to Europe and neighboring parts of West Asia. Large Flowered Selfheal is also known as Big Flowered Selfheal.

Large Flowered Selfheal displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Large Flowered Selfheal produces small spikes of purple, pink, or white flowers.

Leaf size: approximately 2 inches.

Water a young or newly planted Large Flowered Selfheal 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.

Large Flowered Selfheal thrives in full sun to partial shade.

Prunella grandiflora tolerates temperatures of 50–80°F. Large Flowered Selfheal prefers humidity levels of 40–70%.

Well-draining loamy soil with added organic matter like compost. Good drainage is essential for Large Flowered Selfheal to prevent waterlogging, which leads to root rot and fungal issues.

Feed Large Flowered Selfheal 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 loamy soil with added organic matter like compost. Avoid low spots where water collects after rain.

Large Flowered Selfheal 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.

Large Flowered Selfheal can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 Flowered Selfheal 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 Flowered Selfheal 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.

Large Flowered Selfheal can be propagated through seeds, division of clumps, stem cuttings. Similar propagation techniques also apply to cut-leaved self-heal plant care, which shares the same genus.

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

Large Flowered Selfheal 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.

Large Flowered Selfheal grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Large Flowered Selfheal is native to Europe and neighboring parts of West Asia. In cooler regions, grow Large Flowered Selfheal as a houseplant or bring it indoors before the first frost.