Phedimus aizoon

Penstemon albertinus

Heuchera cylindrica var. alpina

Prunus brigantina

Arnica angustifolia subsp alpina

Aster alpinus

Primula (Cortusa) matthiola

Polygonum viviparum

Viscaria alpina

Potentilla hyparctica

Potentilla sp.

Potentilla hyparctica var. 'Nana'

Ribes alpinum

Festuca brachyphylla

Oxytropis podocarpa

Thlaspi minimum

Dianthus arpadianus

Antennaria alpina

Androsace carnea

Scutellaria alpina

Physocarpus opulifolius 'Jefam'

Sambucus canadensis 'Aurea'

Ulmus americana

Sorbus americana

Acer ginnala

Andryala aghardii

Hydrangea arborescens 'Annabelle'

Prunus sp.

Lychnis x arkwrightii

Draba polytricha

Balsamorhiza sagittata

Artemisia ludoviciana

Sorbaria Sem

Lilium Asiatic

Astilbe 'Purple Rain'

Delphinium elatum 'Aurora Blue'

Sedum 'Autumn Joy'

Aronia melanocarpa 'Autumn Magic'

Aconitum carmichaelii 'Arendsii'

Geum sp.

Azorella trifurcata

Erigeron speciosus 'Azure Fairy'

Geranium 'Azure Rush'

Salvia 'Azure Snow'

Solidago canadensis 'Baby Gold'

Picea pungens 'Bakeri'

Abies balsamea

Berberis thunbergii v. atropurpurea 'Gentry'

Malus x 'Battleford'

Primula 'Bavarian Gaudi Fanny'

Primula 'Bavarian Gaudi Mare'

Corylus cornuta

Penstemon 'Prairie Dusk'

Iris germanica

Penstemon spp.

Leucanthemum superbum 'Becky'

Monarda fistulosa

Monarda 'Bubblegum blast'

Monarda spp.

Monarda/Schizachne combo

Monarda x 'Snow White'

Hemerocallis 'Bela Lugosi'

Campanula sp.

Campanula bellidifolia

Berberis thunbergii 'Glow'

Corydalis solida 'Beth Evans'

Stachys spathulata

Hemerocallis 'Bettylen'

Aconitum x cammarum 'Bicolor'

Stachys macrantha

Epimedium x rubrum

Sambucus nigra 'Gerda'

Cimicifuga simplex 'Hillside Black Beauty'

Sambucus nigra 'Eva'

Rudbeckia hirta

Rudbeckia fulgida 'Goldsturm'

Rudbeckia fulgida var. sullivantii 'Goldstrum'

Gaillardia sp.

Gaillardia aristata

Liatris spicata 'Kobold'

Liatris spicata 'Floristan White'

Philadelphus lewisii 'Blizzard'

Syringa x 'Penda'

Juniperus scopularum 'Blue Arrow'

Clematis integrifolia 'Blue Boy'

Nepeta 'Dropmore Hybrid'

Aquilegia brevistyla

Juniperus sabina 'Blue Danube'

Sisyrinchium montanum

Baptisia australis

Festuca glauca 'Elijah Blue'

Bouteloua gracilis

Edraianthus serpyllifolius

Delphinium grandiflorum 'Blue Mirror'

Wisteria macrostachya 'Blue Moon'

Helictotrichon sempervirens

Vinca minor

Salvia nermerosa 'Blue Queen'

Juniperus horizontalis 'Wiltoni'

Sedum reflexum 'Blue Spruce'

Juniperus squamata 'Blue Star'

Lonicera caerulea var. Kamtschatica 'Borealis'

Prunus virginiana 'Boughen's Golden'

Festuca glauca 'Boulder blue'

Paeonia lactiflora 'Bowl of Beauty'

Rubus idaeus 'Boyne'

Penstemon brandegeei

Heuchera 'Brandon Pink'

Heuchera 'Bressingham Hybrids'

Spiraea prunifolia

Pinus aristata

Bromus sp.

Prunus 'Brookgold'

Cornus alba 'Buds Yellow'

Shepherdia canadensis

Cimicifuga simplex

Ajuga reptans 'Burgundy Glow'

Ajuga reptans 'Bronze Beauty'

Cornus canadensis

Quercus macrocarpa

Gaillardia grandiflora 'Burgundy'

Physocarpus opufolius 'Burgundy Candy'

Euonymus alatus 'Select'

Clematis heracleifolia 'China Purple'

Juniperus sabina 'Calgary Carpet'

Eschscholzia californica

Silene etarium?

Lychnis coronaria

Anemonastrum canadense

Prunus nigra

Anemone canadensis

Hydrangea paniculata 'Candelabra'

Ribes uva-crispa 'Captivator'

Salvia sylvestris 'Caradonna'

Heuchera x villosa 'Carnival Coffee Bean'

Campanula carpatica 'Blue Clips'

Campanula carpatica 'Rapido White'

Campanula carpatica 'White Clips'

Nepeta 'Cat's Pajamas'

Heucherella 'Catching Fire'

Hemerocallis 'Catherine Woodbery'

Gentiana paradoxa

Weigela florida 'Centennial'

Syringa vulgaris 'Charles Joly'

Sedum telephium 'Chocolate Drop'

Prunus virginiana

Potentilla nepalensis

Clematis sp.

Penstemon rupicola

Lewisia cotyledon

Astilbe x arendsii 'Color Flash'

Aquilegia caerulea

Picea pungens var. glauca

Aquilegia spp.

Aquilegia vulgaris 'Black Barlow'

Picea pungens 'Fastigiata'

Syringa vulgaris

Hippophae rhamnoides

Anthylis vulneraria

Berberis thunbergii 'Concorde'

Echinacea spp.

Rudbeckia 'Gold Fountain'

Echinacea purpurea 'Magnus'

Echinacea 'Cheyenne Spirit'

Echinacea purpurea 'White'

Echinacea purpurea 'PowWow Wild Berry'

Physocarpus opulifolius 'Mindia'

Heuchera 'Northern Exposure Lime'

Heuchera spp.

Coreopsis 'Baby Sun'

Heracleum lanatum

Primula veris

Malus 'Emerald Spire'

Geranium sanguineum

Leucanthemum superbum 'Cream Puff'

Polemonium reptans 'Touch of Class'

Lysimachia nummularia

Veronica whitleyi

Veronica prostrata

Potentilla reptans

Heterotheca jonesii x villosa

Crocus spp.

Veronicastrum virginicum

Veronicastrum virginicum 'Fascination'

Euphorbia polychroma

Erioganum ovalifolium

Anemone multifida

Anemone multifida

Narcissus spp.

Hosta 'Dancing Queen'

Physocarpus opulifolius 'Dart's Gold'

Silene davidii

Penstemon davidsonii

Hemerocallis 'Happy Returns'

Delphinium spp.

Achillea millefolium 'Desert Eve™ Light Yellow'

Achillea millefolium 'Desert Eve™ Terracotta'

Phemeranthus (Talinum) 'Zoe'

Erigeron linearis