
The Blues in the Conservatory at Longwood Gardens, Pennsylvania, every year
Longwod Gardens, Pennsylvania, Research, Conservation and Pleasure Gardens
Legacy of Pierre S. du Pont, 1870-1954
The Spring in the conservatory at Longwood is often filled with blue flowers.
Blue, the conservatory reminds, is the rarest colour for flowers, fruit and foliage, occurring in less than 10% of the universe of such.
The Himalayan Poppy (Meconopsis ‘Lingholm’)
In the autumn, the Gardens begin the forcing of the rare blue poppy for flowering in early March.
The plant contains pigment only for blue. This may present from blue to pink depending on variables in the soil.











Himalayan Blue-Poppy
Blues in the Longwood Conservatory, 2016-2019

Blue Daisy (Felicia amelloides)

Longwood Hybrid Cineraria (Pericallis hybrida)
Grape-Hyacinth (Muscari aucheri)


Marriage-vine (Solanum wendlandii)
Ground- Ivy Sage (Salvia glechomifolia)
Ceanothus (Ceanothus)

Two varieties of lavender

Pansies
Spurflower (Plectranthus)

Sea-Lavender (Limonium perezii)
Delphinium (Delphinium)

Poppies
Bigleaf Hydreangea (Hydrangea macrophylla)

Blue Coleus (Plectranthus thrysoideus)


Canterbury Bells (Campanula Media)

Blue Flax (Heliophila coronopifolia)


Columbine (Aquilegia)

Woodland Forget-Me-Not (Myosotis sylvatica)


Pride-of-Madeira (Echium Candicans)

Pride-of-Madeira (Echium)

Poppy-Flowered Anemone (Anemone coronaria)

Chirita (Chirita)

Portuguese Squill (Scilla peruvinana)
Double Bellflower (Campanula halodgenis)