Lady’s Slipper Orchid (Cypripedium macranthos)

Lady's Slipper Orchid botanical diagram

About Lady's Slipper Orchid

Lady's Slipper Orchid (Cypripedium macranthos) is grown for garden performance matched to its site needs. Expect partial sun, typically 0.3–0.61 m tall, low water once established.

Sun Partial
Water Low
Height 1–2 ft (30–60 cm)
Habit Herbaceous Perennial
Origin Altay, Amur, Belarus, Buryatiya, Central European Russia, China North-Central, East European Russia, Inner Mongolia, China, Russia, East Asia, Europe, Northern Asia [1]
Season Spring, Summer
Hardiness Zones 3–7

Can Lady's Slipper Orchid take your winter? Type your ZIP below and compare it with Zones 3–7.

2023 USDA ZIP listings (PRISM / USDA-ARS). Find Your USDA Hardiness Zone · Official USDA map.

Is Lady's Slipper Orchid Right for Your Garden?

Best for

  • Mixed borders and general garden use
  • Dry gardens, gravel schemes, or water-restricted sites

Not recommended if

  • Permanently moist or boggy ground

Trade-off to know

Lady's Slipper Orchid is tolerant once established, but needs consistent water in the first season. Drought tolerance builds slowly — expect 1–2 years before it can fend for itself in dry spells.

Growing Conditions for Lady's Slipper Orchid

Site checklist

  • Sun: partial sun
  • Soil drainage: Moist but Well Drained
  • Water: Low
  • Hardiness zones: 3, 4, 5, 6, 7

Adjustments

  • Wrong light level is the most common cause of weak performance
  • Fix drainage before treating leaf symptoms

Shared growing steps for this plant’s group: How to Grow Lady's Slipper. Notes below stay specific to this plant.

How to Care for Lady's Slipper Orchid

Establishment

  1. Plant Lady's Slipper Orchid in a site matching its sun and drainage needs
  2. Water regularly until roots settle, then match watering to the plant’s need

Ongoing care

  • Mulch to buffer moisture swings
  • Remove dead or damaged growth in season
  • Avoid constant wet foliage where disease pressure is high

Diagnosing Problems with Lady's Slipper Orchid

SymptomLikely causeConfirming signAction
Leaves wilting or scorching at tips in dry weather Drought stress Soil dry 5+ cm deep; leaf tips brown and crisp, not soft Water Lady's Slipper Orchid deeply at the base once weekly in dry spells. Mulch around the root zone to retain moisture.
Sudden wilting on one branch while rest of plant looks healthy Root rot from poor drainage in one spot Affected branch has dark, mushy roots when gently uncovered Cut back affected branch to healthy wood. Improve drainage in that area before the next growing season.

Leaves wilting or scorching at tips in dry weather

Likely cause
Drought stress
Confirming sign
Soil dry 5+ cm deep; leaf tips brown and crisp, not soft
Action
Water Lady's Slipper Orchid deeply at the base once weekly in dry spells. Mulch around the root zone to retain moisture.

Sudden wilting on one branch while rest of plant looks healthy

Likely cause
Root rot from poor drainage in one spot
Confirming sign
Affected branch has dark, mushy roots when gently uncovered
Action
Cut back affected branch to healthy wood. Improve drainage in that area before the next growing season.

Lady's Slipper Orchid FAQ

  1. Is Lady's Slipper Orchid easy to grow?

    Lady's Slipper Orchid is relatively undemanding once established, particularly in dry conditions. The most common mistakes are poor drainage and incorrect sun placement.

  2. How big does Lady's Slipper Orchid get?

    Lady's Slipper Orchid typically reaches 0.3–0.61 m. Final size depends on soil quality and available root space. Allow adequate spacing at planting — most plants reach their full spread within 5–10 years.

  3. How much sun does Lady's Slipper Orchid need?

    Lady's Slipper Orchid grows best in partial sun. Planting in the wrong light level is the single most common cause of poor performance. Check the aspect of your site before choosing a position.

What Lady's Slipper Orchid Symbolises

  • rare
  • protective
  • elegant
  • mysterious

References

  1. [1] GBIF species distributions — Native range summarised from GBIF distribution records; locality noise filtered to country and macro-region terms. - https://www.gbif.org/species/2820423

Taxonomic identifiers

  • https://www.gbif.org/species/2820423 (GBIF 2820423)
  • https://www.wikidata.org/wiki/Q1315287 (Wikidata Q1315287)
  • https://powo.science.kew.org/taxon/kew-54212 (POWO kew-54212)
  • https://www.ipni.org/n/625835-1 (IPNI 625835-1)

Plant details on Bosquelle are curated from published references and garden practice. Height, bloom time, hardiness, and look still shift with climate, soil, and care — use this profile as a reliable starting point, then check what local growers see in your area.