The Story
Plant Bio
Cypripedium japonicum is a deciduous terrestrial orchid featuring two large, pleated, fan-shaped leaves and a distinctive, large, slipper-shaped flower.
This species is noted for its very large, fan-shaped leaves and a single, huge, pouched flower per stem, making it a dramatic specimen for a shaded woodland garden.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
15 inches
Width
15 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Consistently moist soil
Humidity
High humidity preferred
Lifespan
10+ years
Native To
Japan, Korea, China
Toxicity
Non-toxic
Bloom period
Late spring
In flower about 1 month of the year
Planting
How to Grow
- Tuck seeds into moist, well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity.
- Plant in shaded area with rich, organic matter.
- Water consistently but avoid waterlogging.
- Mulch lightly to retain moisture during summer.
- Divide in early fall every 3-4 years for propagation.
Pro Tip
Ensure shaded, moist, and well-drained soil for best growth.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Fertilize with organic compost in early spring
- Provide shade during hot summer days
Don't
- Avoid direct, harsh sunlight ❌
- Do not let soil dry out completely
- Avoid heavy, waterlogged soil
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Pest Check |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Japanese Lady's Slipper Orchid questions
What zones can Japanese Lady's Slipper Orchid grow in?
Japanese Lady's Slipper Orchid is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Japanese Lady's Slipper Orchid deer resistant?
Not reliably. Deer may browse Japanese Lady's Slipper Orchid, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Japanese Lady's Slipper Orchid bloom?
Japanese Lady's Slipper Orchid typically blooms in late spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Japanese Lady's Slipper Orchid need full sun?
Japanese Lady's Slipper Orchid does best in part shade.
More Cypripedium to compare
Small Yellow Lady's Slipper
Cypripedium parviflorum 'var parviflorum'
Showy Lady's Slipper
Cypripedium reginae
Lady's Slipper Orchid Hybrid Emil
Cypripedium x hybrida 'Emil'
Sabine's Lady's Slipper
Cypripedium sabine
Gabriela's Lady's Slipper
Cypripedium x gabrieleae 'Gabriela'
Large-flowered Lady's Slipper
Cypripedium macranthos
Keep exploring
Explore the genus
Grow Japanese Lady's Slipper Orchid with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.