Taiwan Lady's Slipper Plant Care

Taiwan Lady's Slipper (Cypripedium formosanum) belongs to the Orchidaceae family within the Cypripedium genus. Taiwan Lady's Slipper is native to Taiwan.

Taiwan Lady's Slipper displays a clumping, terrestrial orchids growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Taiwan Lady's Slipper produces showy, slipper-shaped flowers in various colors like pink, yellow, and white.

Leaf size: approximately 6 inches.

Water a young or newly planted Taiwan Lady's Slipper 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.

Taiwan Lady's Slipper thrives in filtered sunlight or partial shade. Avoid placing Taiwan Lady's Slipper in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Cypripedium formosanum tolerates temperatures of 60–75°F. Taiwan Lady's Slipper prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, slightly acidic soil mix with good aeration like pine bark and perlite. Good drainage is essential for Taiwan Lady's Slipper to prevent waterlogging, which leads to root rot and fungal issues.

Feed Taiwan Lady's Slipper 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 filtered sunlight or partial shade and well-draining, slightly acidic soil mix with good aeration like pine bark and perlite. Avoid low spots where water collects after rain.

Taiwan Lady's Slipper is suited to USDA Zone 6a – 8b.

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.

Taiwan Lady's Slipper can spread to about 1 ft (0.3 m) and reach about 2 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 Taiwan Lady's Slipper 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.

Taiwan Lady's Slipper is hardy down to USDA zone 6a, 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.

Taiwan Lady's Slipper can be propagated through division of rhizomes or tubers. Similar propagation techniques also apply to elegant lady's slipper plant care, which shares the same genus.

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

Taiwan Lady's Slipper is susceptible to aphids, spider mites, 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.

Taiwan Lady's Slipper grows outdoors in USDA Zone 6a – 8b. It survives winters down to planting zone 6a. Taiwan Lady's Slipper is native to Taiwan.