The Story
Plant Bio
Cypripedium calceolus, yellow lady's slipper orchid, is a slow clumping terrestrial orchid of Europe and Russia, ten to twenty-four inches high. Large pleated leaves alternate up the stem, and each flower carries a bright yellow inflated pouch below twisted maroon-brown petals, held singly or in pairs in late spring.
It is protected across Europe and was reduced to a single wild plant in Britain by collectors, so only ever buy nursery-raised, flask-propagated stock — wild-collected plants are both illegal and doomed, since the roots depend on soil fungi that do not transplant. It is exceptionally slow, taking years from seed to first flower.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
18 inches
Width
14 inches
Light
Partial Sun, Shade
Zones
4, 5, 6
Water
Moderate
Humidity
Moderate
Lifespan
Perennial
Native To
Europe and Russia
Toxicity
Hairs cause contact dermatitis
Planting
How to Grow
- Buy only nursery-raised, flask-propagated plants.
- Plant in partial shade in humus-rich, alkaline, drained soil.
- Keep the soil moist but never waterlogged.
- Mulch with leaf mould, keeping it off the crown.
- Do not disturb the roots once planted.
- Wear gloves; the hairs cause skin irritation.
Pro Tip
Only flask-propagated plants survive — wild-collected orchids die because the roots depend on soil fungi that cannot be moved with them.
Keep It Thriving
Care Guide
Do
- Buy flask-propagated stock only 🏷️
- Give it alkaline, humus-rich soil 🌱
- Mulch with leaf mould 🍂
- Wear gloves when handling it 🧤
Don't
- Buy wild-collected plants ❌
- Disturb the roots ❌
- Let the soil dry or waterlog ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Enjoy | ||||||||||||
| Mulch |
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
Yellow Lady's Slipper questions
What zones can Yellow Lady's Slipper grow in?
Yellow Lady's Slipper is hardy in USDA Zones 4–6. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Yellow Lady's Slipper deer resistant?
Yes — Yellow Lady's Slipper is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Yellow Lady's Slipper bloom?
Yellow Lady's Slipper typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Yellow Lady's Slipper need full sun?
Yellow Lady's Slipper 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
Hardy in your zone?
Grow Yellow Lady's Slipper 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.

