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Cypripedium parviflorum var. pubescens

Native Plants

Large Yellow Lady’s Slipper

3 Photos


Summary

Few wildflowers can rival large yellow lady’s slipper (Cypripedium parviflorum var. pubescens) 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 yellow trillium (Trillium luteum), wild ginger (Asarum canadense), Christmas fern (Polystichum acrostichoides), northern barren strawberry (Waldsteinia fragarioides), woodland phlox (Phlox divaricata), wild geranium (Geranium maculatum), wild bleeding heart (Dicentra eximia), twinleaf (Jeffersonia diphylla), and oakleaf hydrangea (Hydrangea quercifolia). Zones 3-8. 


More Details

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

    Cypripedium calceolus

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