Abelia ‘Edward Goucher’
Abutilon × milleri hort. ‘Variegatum’
Acer cappadocicum ‘Aureum’
Acer griseum
Acer palmatum ‘Suminagashi’
Acer platanoides ‘Crimson King’
Acer pseudoplatanus ‘Brilliantissimum’
Acer pseudoplatanus ‘Prinz Handjéry’
Acer rubrum ‘October Glory ‘
Acer triflorum
Achillea ‘The Beacon’
Aconitum carmichaelii ‘Cloudy’
Aconitum x bicolor ‘Spark’s Variety’
Aconitum x cammarum ‘River Devon’
Aesculus pavia ‘Atrosanguinea’
Aesculus x neglecta ‘Erythroblastos’
Aethionema ‘Warley Rose’
Agapanthus ‘Ben Hope’
Agapanthus ‘Ardernei Hybrid’
Agapanthus ‘Streamline’
Agapanthus ‘Tinker bell’
Agapanthus praecox orientalis
Alchemilla mollis
Allium ‘Globemaster’
Allium ‘Nigrum’
Allium ‘Purple Rain’
Allium ‘Universe’
Aloysia citriodora
Alstroemeria Sovereign
Amelanchier styraciflua
Anthemis tinctoria ‘Wargrave Variety’
Aquilegia bertoloni
Arabis ferdinandi-coburgi ‘Old Gold’
Arbutus x andrachnoides
Argyrocytisus battandieri
Arisaema candidissimum
Arisaema ringens
Arisaema tortuosum
Aristolochia clematitis
Armeria juniperfolia
Armeria maritima ‘Rubra’
Armeria maritima alba
Asphodelus albus
Aster ‘Alma Potschke’
Aster ‘Autumn Snow’
Aster ‘Freda Ballard’
Aster ‘Harringtons Pink’
Aster ‘Heinz Richard’
Aster ‘Little Carlow’
Aster ‘Patricia Ballard’
Aster ‘Samoa’
Aster novae-angliae ‘Marina Wolkonsky’
Aster novi-belgi ‘Fellowship’
Aster novi-belgi ‘Jenny’
Aster x frikartii ‘Monch’
Astilbe ‘Fever’
Astilbe simplicifolia Bronze Elegance
Astrantia ‘Moulin Rouge’
Astrantia major ‘Carinthiaca’
Astrantia major ‘Roma’
Aubretia astolat ‘Variegata’
