List of non-proprietary plant varieties in culture January 2021
Amelanchier Amelanchier alnifolia 'Thiessen' Syringa Amelanchier canadensis 'Prince William Tree Forms Amelanchier stolonifera ‘Fergie’ Syringa pekinensis 'Morton' China Snow™ Peking Amelanchier × grandiflora ‘Autumn Brilliance’ lilac Amelancher x grandiflora ‘Cole’s Select’ Syringa pekinensis 'Zhang Zhiming' Beijing Gold™ Amelanchier × grandiflora 'Princess Diana' Peking lilac Syringa reticulata 'Ivory Silk' Aronia Aronia galicjanka Shrubs Aronia melanocarpa ‘Nero’ Syringa x chinensis 'Lilac Sunday' Aronia melanocarpa ‘Viking’ Syringa chinensis ‘Red Rothomagensis’ Syringa juliana’ George Eastman’ Syringa hyacinthiflora ‘Sister Justina’ Aruncus Syringa hyacinthiflora ‘Pocahontas’ Aruncus ‘Horatio’ Syringa hyacinthiflora ‘Mt Baker’ Syringa pubescens subsp. microphylla 'Superba' Betula Syringa vulgaris ‘Albert F. Holden’ Betula nigra 'BNMTF' Dura-Heat Syringa vulgaris ’Atheline Wilbur’ Syringa vulgaris ‘Avalanche’ Betula nigra 'Cully' Heritage Syringa vulgaris ‘Beauty of Moscow’ Betula tianshanica ‘EmerDak’ Emerald Flare® Syringa vulgaris ‘Declaration’ Betula populifolia 'Whitespire Sr.’ Syringa vulgarus ‘Fiala Remembrance’ Syringa vulgaris ‘Flower City’ Cornus Syringa vulgaris ‘Frank’s Fancy’ Cornus kousa var. chinensis 'Milky Way' Syringa vulgaris ‘Frederick Law Olmsted’ C. kousa x C. nutallii Venus® Syringa vulgaris ‘Marie Frances’ C. kousa Scarlet Fire® Syringa vulgaris ‘Monge’ Syringa vulgaris ‘Monique Lemoine’ Syringa vulgaris ‘My Favorite’ Halesia Syringa vulgaris ‘Old Glory’ Halesia monticola ‘Pink Mountain Silverbell’ Syringa vulgaris ‘Pauline Fiala’ Syringa vulgaris ‘Paul Thirion’ Hydrangea Syringa vulgaris ‘President Lincoln’ Hydrangea paniculata ‘Dharuma’ Syringa vulgaris ‘Rochester’ Hydrangea quercifolia 'Vaughn's Lillie' Syringa vulgaris ‘Tristie Barbaro’ Hydrangea quercifolia ‘Snowcicle’ Syringa vulgaris ‘Vesper Song’ Syringa vulgaris ‘Wedgwood Blue’ Syringa vulgaris ‘White Angel’ Miscanthus Syringa vulgaris ‘Wonderblue’ (Little Boy Blue) Miscanthus sinensis Red Cloud ‘EMPMISO1’ Syringa vulgaris ‘Yankee Doodle’
List of non-proprietary plant varieties in culture January 2021
Prunus Prunus cerasus 'Bali'
Popular Populus tremula ‘Erecta’
Rubus Rubus ‘Brandywine’
Ulmus Ulmus davidiana var. japonica 'Morton’ AccoladeTM Ulmus 'Morton Glossy’ Triumph™ Ulmus parvifolia 'Emer II' Allee Ulmus 'Frontier'
Vaccinium Vaccinium ‘Superior’ Vaccinium ‘Friendship’
Vitis Vitis ‘Marquette’ Discontinued Vitis ‘Somerset’ Discontinued