Alphabetical Plant Listing

Cypripedium japonicum (Japanese Lady Slipper Orchid)

Japanese Lady Slipper Orchid, Japanese Ladyslipper Orchid


Cypripedium japonicum (Japanese Lady Slipper Orchid) is a small, hardy orchid boasting two broad fan-like, pleated leaves that grow opposed to each other at the center of a smooth single stem. The slender, glabrous stem produces a pink flower, 2.5 in. across (6-7 cm), with broad petals and an inflated, puffy pouch. The slipper-shaped flowers are spotted and mottled with purple-red striations and blotches. Blooming from mid-spring to early summer (depending on geographic locations), the plant spreads by underground runners to form nice colonies where happy. It can form large colonies with thousands of flowering stems, each with a bloom. Cypripedium japonicum is not easy to grow.

  • Grows up to 8-10 in. tall (20-30 cm).
  • Thrives in part shade in moist, fertile, humus-rich, alkaline, well-drained soils. Requires 2 to 3 hours direct early morning or late afternoon sun and be in dappled shade the remainder of the day. Provide an annual winter mulch of leaf mould.
  • Excellent choice for borders, city gardens, cottage gardens and containers.
  • Allow the foliage to die down naturally.
  • Propagate by division in early or mid-spring and replant immediately. Some of the soil from the root ball, which contains beneficial fungi, should be planted with each division.
  • No serious pest or disease issues. Keep an eye out for slugs and gray moulds.
  • Native to central China, the Korean Peninsula, and throughout the mainland islands of Japan.

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Requirements

Hardiness 4 – 7
Plant Type Orchids, Perennials
Plant Family Cypripedium - Laddy Slippers
Exposure Partial Sun
Season of Interest Spring (Mid,Late)
Summer (Early)
Height 8" – 10" (20cm – 25cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Garden Uses Beds and Borders, Patio and Containers, Underplanting Roses and Shrubs
Garden Styles City and Courtyard, Informal and Cottage

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Eramiya, norikko, Shutterstock

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 7
Plant Type Orchids, Perennials
Plant Family Cypripedium - Laddy Slippers
Exposure Partial Sun
Season of Interest Spring (Mid,Late)
Summer (Early)
Height 8" – 10" (20cm – 25cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Garden Uses Beds and Borders, Patio and Containers, Underplanting Roses and Shrubs
Garden Styles City and Courtyard, Informal and Cottage

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