Mt Cuba Center
Morning sunrise illuminates the round garden at Mt. Cuba Center.
Explore the Gardens Virtual Tour Virtual Tour

Gardens and trails are open Wednesday through Sunday from 10 am-6 pm. Plan your visit today!

An ecological gardening certificate student completes a Native Plants of Fall exam in Mt. Cuba Center's naturalistic gardens.
Ecological Gardening Certificate Learn More Learn More
Program Guide

Classes offered year-round. Learn to garden in harmony with nature, take an art or wellness class, and more!

Carex barrattii
Latest Trial: Carex for the Mid-Atlantic Region Learn More Learn More
Trial Garden

Mt. Cuba Center evaluates native plants and related cultivars for horticultural and ecological value.

Mt. Cuba Center's natural lands pictured at sunset.
Protecting Natural Lands Learn More Learn More
Ecological Land Management

Mt. Cuba conserves and stewards more than 1,000 acres including meadows, forests, streams and riparian corridors.

Two guests walk down the West Slope path in spring at Mt. Cuba Center.
Gift a Membership Gift Guide Gift Guide

Enjoy unlimited general admission, member discounts, guest passes, and more!

Mt Cuba Center
Back to list

Cypripedium parviflorum var. pubescens

Native Plants

Large Yellow Lady’s Slipper

3 Photos


Few wildflowers can rival large yellow lady’s slipper in mid-May with is attractive pouch-like flowers. This perennial, multi-stemmed orchid bursts into bloom with 2-3″ wide, bright yellow irregular flowers borne terminally on 18″ tall leafy stems. Large yellow lady’s slipper performs best in partial shade with organic, moist, well-drained, and neutral to slightly alkaline soils. In woodlands with bright filtered light, it integrates nicely with Trillium luteum, Asarum canadense, Polystichum acrostichoidesGeum fragarioides, Phlox divaricata, Geranium maculatum, Dicentra eximia, Jeffersonia diphylla, and Hydrangea quercifolia.

More Details

  • Plant Type
  • Sun/Shade Conditions
    filtered-shade, partial-shade 
  • Foliage Character
  • Soil Moisture
    average, moist 
  • Flowering Period
    late-spring, mid-spring
  • Soil PH
    adaptable, alkaline 
  • Flower Color
  • Summer Foliage Color
  • Other Scientific Names

    Cypripedium calceolus

  • Fall Foliage Color
    dormant, yellow 
  • Other Common Names
    greater yellow lady's slipper 
  • Fruit/Seed Color