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Major Plant Groupings at Winterthur

 

In 1962 an interviewer asked Henry Francis du Pont (1880-1969) to discuss the defining aesthetic principles of his great naturalistic garden at Winterthur. Du Pont replied, "For me, color is the thing that counts more than any other."

The following is a list of the major plant groupings at Winterthur, listing the flower colors and time of bloom in Delaware (Zone 6B). For more than 65 years H. F. du Pont observed succession of bloom, experimenting with thousands of plants and refining the color combinations that are the essence of the Winterthur Garden.

 

 
Color
Time of Bloom
March Bank
   
Galanthus spp. (Snowdrops)
White
January-March
Yellow
March
Eranthis hyemalis (Winter Aconite)
Yellow
March
Chionodoxa spp. (Glory-of-the-Snow)
Blue
March
Scilla spp. (Squills)
Blue
March
Leucojum vernum (Spring Snowflake)
White
March
Crocus spp. and hybrids
Various
March
Cornus officinalis (Cornelian-Cherry)
Yellow
March
Yellow
March, April
Uvularia grandiflora (Bellwort)
Yellow
April
Mertensia virginica (Virginia Bluebell)
Blue
April, May
Phlox divaricata (Wild Phlox)
Lavender
April, May
Hosta ventricosa
Lavender
July
 
Winterhazel Walk
Yellow
April
Rhododendron mucronulatum (Korean R.)
Lavender
April
Helleborus spp. (Hellebores)
Various
April
Corydalis bulbosa
Lavender
April
Primula abchasica (Abkhazian Primrose)
Pink
April
 
Pinetum
Chaenomeles spp. and cvs. (Flowering Quince)
Various
April
Viburnum spp.
Chartreuse, white
April, May
Spiraea spp.
White
April
Rhododendron spp. and cvs.  (Deciduous Azaleas)
Pink, Yellow, Orange
April, May
Rhododendron cvs.(Kurume Hybrid Azaleas)
Pinks
May
 
Sundial Garden
White, pink
April
Spiraea spp.
White
April
Chaenomeles spp. and cvs.
(Flowering Quince)
Pink, red
April
Prunus spp. and cvs. (Cherries)
Pink
April
Viburnum spp. and cvs.
White
April
Fothergilla spp. and cvs.
White
April, May
Malus cvs. (Crabapples)
Pink
April
Exochorda spp. and cvs. (Pearlbushes)
White
April, May
Syringa cvs. (Lilacs)
Lavenders, white
May
Paulownia tomentosa (Princess Tree)
Lavender
May
 
Azalea Woods
Lavender, white
April
White
April, May
Rhododendron cvs.(Kurume Hybrid Azaleas)
Various
May
R. kaempferi (Torch Azalea)
Pinks
May
Rhododendron spp. and cvs.
Various
May
Hyacinthoides hispanica
(Spanish Bluebell)
Blue
May
 
Peony Garden
Paeonia cvs. (Hybrid tree peonies)
Various
May
Paeonia cvs. (Herbaceous peonies)
Various
May
Rhododendron cvs. (Kurume Azaleas)
Pink
May
Kolkwitzia amabilis (Beautybush)
Pink
May
 
Sycamore Hill
Yellow, white
April
Cercis canadensis (Redbud)
Lavender
April, May
Syringa spp. and cvs.
Lavender
May
Aesculus pavia (Red Buckeye)
Red
May
Kalmia latifolia (Mountain-laurel)
Pink
May, June
Chionanthus virginicus (Fringe Tree)
White
May, June
Deutzia spp. and cvs
White, lavender
 


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