Achillea 'Renate'
Achillea filipendulina 'Helios'
Aconitum sp. (coll. Nepal)
Agapanthus 'Glenavon'
Agapanthus 'Indigo Dreams'
Agapanthus 'Summer Love Blue'
Agapanthus 'ex Crystal Drop'
Agastache 'Beelicious Pink'
Agastache ex 'Danish Delight' (zaailingen)
Ajuga reptans 'Braunherz'
Ajuga reptans 'Sanne'
Allium tuberosum hybr. 'Iden Croft'
Amorphophallus albus
Amorphophallus henryi
Andropogon ternarius
Anemone nemorosa 'Celestial'
Aquilegia viridiflora
Arisaema dilatatum
Arnica sachalinensis
Aster 'Looman's Pink Double'
Aster ageratoides 'Star Shine'
Aster amellus 'Grunder'
Aster ericoides 'Henriette'
Aster ericoides 'Pink Cloud'
Aster x frikartii 'Flora's Delight'
Baccharis sagittalis
Barbarea vulgaris 'Variegata'
Begonia grandis subsp. holostyla 'Nanjiang Silver'
Bidens triplinervia 'Teevlek'
Brachyelytrum japonicum
Brunnera macrophylla 'Emerald Mist'
Buphtalmum salicifolium 'Alpengold'
Cacalia sp. China
Calamintha nepeta 'Marvelette White'
Calylophus serrulatus
Campanula poscharskyana 'Pinkins'
Cardamine concatenata
Carex aurea
Caryopteris clandonensis 'Grand Blue'
Centranthus ruber subsp. sibthorpii
Cirsium erisithales
Cistus albidus
Cistus laurifolius
Conopodium majus
Cotoneaster procumbens 'Streib's Findling'
Cryptotaenia japonica f. atropurpurea
Dianthus 'Pom Pom'
Dianthus 'Purple on Purple'
Dianthus 'Sini'
Dianthus 'Whatfield Wisp'
Dianthus giganteiformis subsp. pontederae
Dianthus hyssopifolius subsp. gallicus
Dianthus nitidus
Dianthus squarrosus
Dianthus superbus f. longicalycinus
Diascia 'Emma'
Diascia fetcaniensis
Dorycnium hirsutum 'Fréjorgues'
Dorycnium pentaphyllum ssp. germanicum
Dracocephalum peregrinum 'Blue Dragon'
Echinacea 'Meditation Purple'
Echinacea 'Shining Purple' (2061)
Echinops exaltatus
Ellisiophyllum pinnatum
Epimedium 'Akebono'
Epimedium 'Fantur'
Epimedium 'Milky Way'
Epimedium grandiflorum 'Circe'
Epimedium pinnatum colchicum 'Black Sea'
Epimedium sempervirens 'Okuda's White'
Eryngium amethystinum (Caste del Monte, It.)
Eryngium bourgatii 'Picos Blue'
Eryngium bourgatii (type Michael)
Eryngium humilis ?
Erysimum 'Bowles Mauve Compact'
Eupatorium fistulosum f. albidum 'Ivory Towers'
Euphorbia 'Miners Merlot'
Euphorbia corollata ssp. hirsuta
Ferula sp. (coll. Israel)
Fuchsia 'Enfant Prodigue'
Fuchsia 'Genii'
Fuchsia 'Papoose'
Fuchsia magellanica 'Riccartonii'
Fuchsia magellanica var. molinae
Geranium 'Elworthy Eyecatcher'
Geranium 'Limburg's Bronze Green'
Geranium cinereum subcaulescens 'Van Lochem'
Geranium himalayense 'Derrick Cook'
Geranium phaeum 'Joseph Green'
Geranium phaeum 'Wendy's Blush'
Geranium sanguineum (purper) nr. 1905
Geranium sanguineum 'Apfelblüte'
Geum 'Rearsby Hybrid'
Gypsophila repens 'Filou Rosa'
Hastingsia alba
Helenium 'Hartmut Rieger'
Helianthus 'Anne'
Hemerocallis 'Conspicua'
Heracleum spondylium 'Pink Cloud'
Heuchera americana 'Melting Fire'
Heuchera cf. abramsii
Impatiens arguta
Impatiens arguta 'Alba'
Impatiens species P.1961
Iris barbata elatior 'Rosalie Figge'
Iris milesii
Iris sibirica 'Trim the Velvet'
Isodon serra
Juncus inflexus
Kalimeris incisa 'Nana Blue'
Knautia arvensis x macedonica
Kniphofia 'Ice Queen'
Koeleria glauca 'Lorsch'
Lathyrus vernus (wild coll. Sienna It.)
Lavandula angustifolia 'Anna'
Leucanthemum x superbum 'Brightside'
Ligusticum scoticum
Linaria triornitidophora 'Pink Budgies'
Lunaria rediviva (lavendelblauwe vorm)
Lychnis viscaria
Lysimachia clethroides
Lythrum salicaria 'Stichflamme'
Lythrum virgatum 'Joy'
Lythrum virgatum 'Rose Queen' (Duitse v.)
Lythrum virgatum 'Swirl'
Melissa officinalis 'Lemona'
Mentha spicata 'Black Spearmint'
Michauxia campanuloides
Miscanthus sinensis 'Rotsilber'
Molinia caerulea ssp. arundinacea 'Black Arrows'
Monarda 'Blaukranz'
Monarda 'Danish Dark'
Monarda hybr. Deep Purple (Dove Cottage Nursery)
Monarda luteola (coll. Texas)
Nepeta 'Kit Cat'
Nepeta curviflora
Nepeta grandiflora 'Blue Elf'
Nepeta nepetella subsp. amethystina
Nepeta nuda subsp. nuda (syn. pannonica)
Oenanthe pimpinelloides
Origanum 'Guusje'
Origanum vulgare ssp. virens
Oxytropis pilosa
Paeonia delavayi angustiloba (potaninii)
Panicum virgatum 'Nican'
Parthenium integrifolium 'Eminence'
Peltaria turkmena
Persicaria bistorta type
Persicaria weyrichii
Peucedanum cervaria
Peucedanum longifolium (coll. H.& K.)
Peucedanum ostruthium
Phlox paniculata 'Freckle Blue Shades'
Pimpinella saxifraga
Pittosporum tenuifolium 'Tom Thumb'
Platycodon grandiflorus 'Mariesii'
Poa glauca 'Blue Hills'
Polygonatum sp. SBQE 310
Polygonatum yunnanense Og 94047
Potentilla rupestris (was P. recta 'Alba')
Primula 'Gonnie'
Pteroxygonum giraldii
Pulmonaria 'Lewis Palmer'
Roscoea purpurea 'Paul Bygrave's hybrids'
Rosmarinus officinalis 'Sappho'
Rudbeckia x 'American Gold Rush'
Salvia 'Bordeaux'
Salvia 'Candy Button' (nr. 5)
Salvia 'Debbie's Rose'
Salvia 'Dyson's Crimson'
Salvia 'Fantasia'
Salvia 'Flower Child'
Salvia 'Free Magenta Lips'
Salvia 'Golden Girl'
Salvia 'Manon'
Salvia 'Peach Parfait'
Salvia 'Pink Dream'
Salvia 'Playa Rosa'
Salvia 'Shell Dancer'
Salvia 'Tangerine Ballet'
Salvia 'Violette de Loire'
Salvia candidissima
Salvia congestiflora
Salvia greggii 'Lemon Light'
Salvia interrupta
Salvia lavandulifolia 'Roquefure'
Salvia microphylla 'Andus'
Salvia microphylla 'San Carlos Festival'
Salvia nemorosa 'Crystal Blue'
Salvia nemorosa 'Jan Spruyt'
Salvia nemorosa hybr. (1701-04)
Salvia officinalis 'Real Form' (ex Filippi)
Salvia przewalskii W/O 9222
Salvia x jamensis 'nr.6'
Sanguisorba 'Ankum's Thrums'
Saposhnikovia divaricata 'Weilakovia'
Saxifraga fortunei ex 'Helderroze Sel.' (roodbladig)
Saxifraga fortunei ex 'Helderroze Selectie' (groen-bronsbladig)
Scabiosa argentea
Scabiosa hladnikiana (syn cinerea)
Scabiosa japonica 'Ritz Blue'
Schizachyrium scoparius 'Blaze'
Schizachyrium scoparius 'Red Frost'
Scutellaria incana (coll. Missouri, donkere sel.)
Scutellaria incana ex 'White Sky' (zaailingen)
Sedum 'Jade Tuffet'
Sedum kimnachi
Sedum spurium 'Purpurteppich'
Sidalcea 'Little Princess'
Sisyrinchium 'Pole Star'
Smilacina racemosa (Hort)
Solidago odora
Sphaeralcea ambigua
Sporobolus heterolepis 'Blue Fog'
Sporobolus heterolepis 'Wisconsin Strain'
Sporobolus wrightii
Stachys officinalis 'Saharan Pink'
Teucrium x lucidrys 'Wageningen'
Thymus praecox subsp. britannicus (syn. pseudolanuginosus)
Thymus vulgaris 'Duftkissen'
Trachelium caeruleum 'Hamers Pandora'
Triosteum perfoliatum
Tulbaghia violacea 'Alba'
Valeriana officinalis
Veratrum maackii parviflorum
Vernonia 'Summer Surrender'
Vernonia fasciculata x lindheimeri
Vernonia lettermannii (donkere steel)
Veronica incana 'Silbersee'
Woodwardia orientalis
Zauschneria cana 'Catalina'
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