| Achillea 'Coronation Gold' |
Achillea millefolium
'Paprika' |
| Achillea millefolium 'Summer Wine' |
| Achillea 'Moonshine' |
| Aconitum fischeri |
| Aconitum 'Stainless Steel' |
| Aegopodium podagraria ‘Variegatum' |
| Agastache 'Black Adder' |
| Agastache foeniculum 'Golden Jubilee' |
| Alcea ficifolia 'Happy Lights' |
| Alcea 'Peaches 'N' Dreams' |
| Alcea rosea ‘Chater’s Double Mix' |
| Alcea rosea ‘Nigra' |
| Alchemilla mollis 'Thriller' |
| Amsonia 'Blue Ice' |
| Amsonia hubrechtii |
| Anemone hupehensis 'September Charm' |
| Anemone sylvestris |
| Anemone x hybrida 'Honorine Jobert' |
| Anemone x hybrida ‘Whirlwind’ |
| Angelica gigas |
| Aquilegia alpina |
| Aquilegia ‘Biedermeier’ |
| Aquilegia c. ‘Little Lanterns’ |
| Aquilegia canadensis ‘Little Lanterns’ |
| Aquilegia flabellata ‘Blue Angel’ |
| Aquilegia flabellata ‘Cameo White’ |
| Aquilegia flabellata ‘Nana Alba’ |
| Aquilegia McKana Hybrids |
| Aquilegia 'Nora Barlow' |
| Aquilegia vulgaris ‘Tower Dark Blue’ |
| Aquilegia ‘Winky Double Red/White’ |
| Aquilegia ‘Winky Red/White’ |
| Aquilegia x caerulea ‘Red Hobbit’ |
| Arabis blepharophylla ‘Red Sensation’ |
| Arctostaphyllos uva-ursi ‘Massachusetts’ |
| Arenaria montana |
| Armeria maritima ‘Alba’ |
| Armeria maritima ‘Splendens’ |
| Armeria ‘Victor Rite’ |
| Artemesia ‘Powis Castle’ |
| Artemesia schmidttiana ‘Silvermound’ |
| Arum italicum |
| Aruncus aethusifolius |
| Aruncus dioicus |
| Aruncus dioicus ‘Kneiffii’ |
| Asarum canadensis |
| Asclepias incarnata |
| Asclepias incarnata ‘Soul Mate’ |
| Asclepias tuberosa |
| Aster 'Lady in Black' |
| Aster nova-angliae ‘Purple Dome’ |
| Aster novae-angliae ‘Andenken an Alma’ |
| Aster 'Wood's Pink' |
| Aster x dumosus 'Alert' |
| Aster x dumosus 'Prof. Anton Kippenberg' |
| Aster x dumosus 'Royal Opal' |
| Aster x frikartii 'Monch' |
| Astilbe c. ‘Visions in Red’ |
| Astilbe chinensis 'Finale' |
| Astilbe chinensis 'Visions' |
| Astilbe chinensis ‘Visions in Pink’ |
| Astilbe 'Maggie Daley' |
| Astilbe s. ‘White Sensation’ |
| Astilbe simplicifolia 'Sprite' |
| Astilbe x a. 'Bridal Veil' (Brautschleier) |
| Astilbe x arendsii 'Deutschland' |
| Astilbe x arendsii ‘Fanal’ |
| Astilbe x arendsii ‘Peach Blossom’ |
| Astilbe x arendsii ‘Red Sentinel’ |
| Astilbe x arendsii 'Rheinland' |
| Aurinia saxatilis |
| |
| Baptisia australis |
| Baptisia ‘Purple Smoke’ |
| Baptisia s. ‘Screaming Yellow’ |
| Baptisia x variicolor ‘Twilite’ |
| Bellis perennis ‘Rominette Mix’ |
| Bergenia ‘Bressingham Ruby’ |
| Bergenia cordifolia |
| Bergenia ‘Rotblum’ |
| Boltonia asteroides 'Snowbank' |
| Brunnera macrophylla |
| Brunnera macrophylla ‘Jack Frost’ |
| Brunnera macrophylla ‘Variegata’ |
| Buddleia davidii ‘Cornwall Blue’ |
| Buddleia davidii ‘Nanho Purple’ |
| Buddleia davidii ‘Pink Delight’ |
| Buddleia davidii ‘Royal Red’ |
| |
| Campanula carpatica ‘Deep Blue Clips’ |
| Campanula carpatica ‘White Clips’ |
| Campanula persicifolia ‘Chettle Charm’ |
| Campanula poscharskyana ‘Blue Waterfall’ TM |
| Campanula punctata ‘Cherry Bells’ |
| Campanula rotundifolia ‘Olympica’ |
| Campanula x ‘Birch Hybrid’ |
| Caryopteris d. ‘Snow Fairy’ |
| Caryopteris ‘First Choice’ |
| Caryopteris x cladonensis ‘Grand Bleu’ |
| Caryopteris x clandonensis 'Dark Knight' |
| Caryopteris x clandonensis ‘Longwood Blue’ |
| Caryopteris x clandonensis ‘Worcester Gold’ |
| Catanache caerulea |
| Centaurea montana |
| Centranthus ruber |
| Cerastium tomentosum |
| Ceratostigma plumbaginoides |
| Chelone glabra |
| Chelone lyonii ‘Hot Lips’ |
| Chrysogonum virginianum ‘Pierre’ |
| Chrysogonum virginiaum |
| Cimicifuga racemosa |
| Cimicifuga ramosa ‘Atropurpurea’ |
| Cimicifuga simplex ‘White Pearl’ |
| Convallaria majalis |
| Coreopsis auriculata ‘Nana’ |
| Coreopsis ‘Autumn Blush’ |
| Coreopsis ‘Creme Brulee’ |
| Coreopsis grandiflora ‘Early Sunrise’ |
| Coreopsis grandiflora ‘Rising Sun’ |
| Coreopsis ‘Jethro Tull’ |
| Coreopsis rosea |
| Coreopsis rosea ‘Heavens Gate’ |
| Coreopsis rosea ‘Sweet Dreams’ |
| Coreopsis verticillata ‘Moonbeam’ |
| Coreopsis verticillata 'Zagreb' |
| Corydalis flexuosa ‘Blue Panda’ |
| Corydalis flexuosa ‘Purple Leaf’ |
| Crocosmia 'George Davidson' |
| Crocosmia 'Lucifer' |
