Rosa virginiana x R. laxa x 'Above and Beyond'

Rosa x 'Adelaide Hoodless'

Rosa rugosa x 'Agnes'

Phedimus aizoon

Penstemon albertinus

Rosa x 'Alexander Mackenzie'

Rosa gallica x 'Alika'

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

Rosa spinosissima var. altaica (Willd.) Rehder

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

Rosa arkansana x 'Assiniboine'

Astilbe 'Purple Rain'

Rosa x 'Aurora Borealis'

Delphinium elatum 'Aurora Blue'

Rosa foetida var. bicolor

Rosa foetida

Sedum 'Autumn Joy'

Aconitum carmichaelii 'Arendsii'

Geum sp.

Rosa nitida x 'Aylsham'

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'

Rosa rugosa x 'Belle Poitevine'

Campanula sp.

Campanula bellidifolia

Berberis thunbergii 'Glow'

Corydalis solida 'Beth Evans'

Stachys spathulata

Rosa x 'Betty Bland'

Rosa rugosa x 'Betty Bugnet

Hemerocallis 'Bettylen'

Aconitum x cammarum 'Bicolor'

Stachys macrantha

Rosa x 'Bill Reid'

Epimedium x rubrum

Sambucus nigra 'Gerda'

Cimicifuga simplex 'Hillside Black Beauty'

Sambucus nigra 'Eva'

Rudbeckia hirta

Rudbeckia fulgida 'Goldsturm'

Rudbeckia fulgida var. sullivantii 'Goldstrum'

Rosa rugosa x 'Blanc Double de Coubert'

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'

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'

Rosa x 'Bonica'

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'

Cornus canadensis

Quercus macrocarpa

Gaillardia grandiflora 'Burgundy'

Physocarpus opufolius 'Burgundy Candy'

Euonymus alatus 'Select'

Clematis heracleifolia 'China Purple'

Rosa spinosissima var. altaica x 'Butterball'

Juniperus sabina 'Calgary Carpet'

Eschscholzia californica

Rosa x 'Campfire'

Silene etarium?

Lychnis coronaria

Prunus nigra

Anemone canadensis

Rosa x 'Canadian Shield'

Hydrangea paniculata 'Candelabra'

Rosa kordesii x 'Captain Samuel Holland'

Ribes uva-crispa 'Captivator'

Salvia sylvestris 'Caradonna'

Rosa glauca x 'Carmenetta'

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'

Rosa kordesii x 'Champlain'

Syringa vulgaris 'Charles Joly'

Rosa x 'Cherry Pie'

Rosa x 'Chinook Sunrise'

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'

Rosa x 'Conestoga'

Rosa rugosa x 'Conrad Ferdinand Meyer'

Physocarpus opulifolius 'Mindia'

Heuchera 'Northern Exposure Lime'

Heuchera spp.

Rosa x 'Coral Drift'®

Coreopsis 'Baby Sun'

Rosa x 'Corinne's Choice'

Rosa x 'Country Dancer'

Heracleum lanatum

Primula veris