Acanthus mollis
Acanthus spinosus AGM
Achillea millefolium ‘Cerise Queen’
Achillea ‘Moonshine’ AGM
Achillea The Bride
Aconitum carmichaelii ‘Arendsii’
Aconitum ‘Ivorine’
Agapanthus ‘Bressingham Blue’
Agapanthus campanulatus ‘Isis’
Agapanthus Headbourne hybrids
Allium caeruleum AGM
Allium cristophii AGM
Alstroemeria aurea
Alstroemeria aurea ‘Lutea’
Amsonia orientalis AGM
Anacyclus pyrethrum var. depressus
Anaphalis margaritacea ‘Neuschnee’
Anaphalis margaritacea var. yedoensis AGM
Anchusa azurea ‘Dropmore’
Anemone hupehensis var. japonica 'Bressingham Glow'
Anemone x hybrida ‘Honorine Jobert’ AGM
Anemone x hybrida ‘Profusion’
Anomatheca laxa
Anthemis cupaniana AGM
Anthemis tinctoria ‘Kelwayi’
Aquilegia McKana Group
Aquilegia vulgaris Vervaeneana Group (v)
Argyranthemum foeniculaceum hort.
Artemisia alba ‘Canescens’ AGM
Arum italicum
Artemisia arborescens
Aruncus dioicus
Asparagus officinalis ‘Franklim’
Asperula suberosa
Asplenium scolopendrium AGM
Aster amellus ‘Veilchenkönigin’ AGM
Aster x frikartii ‘Mönch’ AGM
Aster lateriflorus ‘Lady in Black’
Aster novae-angliae ‘Alma Pötschke’ AGM
Aster novae-angliae ‘Harrington's Pink’ AGM
Aster novae-angliae ‘Mrs S.T. Wright’
Aster novae-angliae ‘Pink Victor’
Aster novi-belgii ‘Blandie’
Aster novi-belgii ‘Davey's True Blue’
Aster novi-belgii ‘Winston S. Churchill’
Astilbe x arendsii ‘Brautschleier’ AGM
Astilbe x arendsii ‘Fanal’ AGM
Astilbe x arendsii ‘Gloria’
Astilbe chinensis ‘Superba’
Astilbe ‘Straussenfeder’
Astrantia major
Athyrium filix-femina AGM
Bergenia ‘Abendglut’
Bergenia cordifolia
Bergenia ‘Silberlicht’ AGM
Bletilla striata
Calamintha nepeta
Campanula divaricata
Campanula lactiflora ‘Loddon Anna’ AGM
Campanula persicifolia alba
Campanula persicifolia blue
Convallaria majalis AGM
Coreopsis verticillata
Coreopsis verticillata ‘Golden Gain’
Coreopsis verticillata ‘Moonbeam’
Crinum x powellii ‘Album’ AGM
Crocosmia x crocosmiiflora
Crocosmia x ‘Citronella’
Crocosmia paniculata ‘Major’
Delphinium Black Knight Group
Delphinium Blue Bird Group
Delphinium ‘Blue Jay’
Delphinium Galahad Group
Dianthus ‘Devon General’ (p) AGM
Dianthus ‘Gran's Favourite’ (p) AGM
Dianthus ‘Houndspool Cheryl’ (p) AGM
Dianthus ‘Miss Sinkins’ (p)
Dianthus ‘Widecombe Fair’ (p) AGM
Dicentra formosa
Dicentra formosa alba
Dicentra spectabilis AGM
Dictamnus albus AGM
Dierama pulcherrimum
Digitalis purpurea Excelsior Group
Digitalis purpurea Excelsior Group white
Dryopteris filix-mas AGM
Echinacea purpurea
Echinacea purpurea ‘White Swan’
Echinops ritro L. AGM
Epimedium ‘Little Shrimp’
Epimedium x perralchicum AGM
Epimedium x versicolor ‘Sulphureum’ AGM
Epimedium x warleyense
Epimedium x youngianum ‘Niveum’ AGM
Erigeron glaucus ‘Elstead Pink’
Erigeron 'Rosa Juwel'
Eryngium bourgatii
Eryngium x oliverianum AGM
Eryngium variifolium
Erysimum ‘Bowles' Mauve’ AGM
Erysimum cheiri ‘Harpur Crewe’ (d) AGM
Eupatorium ligustrinum AGM
Eupatorium purpureum
Euphorbia amygdaloides var. robbiae AGM
Euphorbia characias wulfenii AGM
Euphorbia polychroma
Felicia amelloides ‘Santa Anita’ AGM
Felicia amoena
Felicia amoena ‘Variegata’
Filipendula palmata ‘Rubra’
Filipendula rubra ‘Venusta’ AGM
Filipendula ulmaria ‘Aurea’
Filipendula vulgaris
Fragaria x ananassa ‘Variegata’ (F)
Francoa ramosa
Fritillaria meleagris AGM
Fritillaria michailovskyi AGM