Liatris aspera
Vinca minor 'Illumination'
Sphaeralcea ambigua
Juniperus chinensis 'Iowa'
Phellodendron amurense
Knautia macedonica
Achillea ‘Coronation Gold’
Tropaeolum majus 'Vesuvius'
Aster ericoides
Lavandula  × intermedia 'Grosso'
Sedum spurium 'Fuldaglut'
Aquilegia flabellata
Solidago rigida
Euonymus fortunei 'Minimus'
Hosta kikutii 'Hillbilly Blues'
Aeonium arboreum  'Zwartkop'
Salvia  × sylvestris 'Blue Hill'
Correa 'Dusky Bells'
Asarum shuttleworthii 'Callaway'
Geranium cinereum ‘Ballerina’
Hosta 'Piedmont Gold'
Scabiosa ‘Butterfly Blue'
Lamium galeobdolon 'Hermann's Pride'
Salvia coccinea
Capsicum annuum 'Black Pearl'
Sedum rupestre 'Angelina'
Echinacea tennesseensis 'Rocky Top'
Agastache rupestris
Ipomoea tricolor and cvs.
Paulownia tomentosa
Allium caeruleum
Cephalotaxus harringtonii 'Prostrata'
Sempervivum 'Black'
Helleborus orientalis
Agastache ‘Summer Breeze’
Amsonia tabernaemontana
Hibiscus rosa-sinensis
Verbena canadensis 'Apple Blossom'
Crambe cordifolia
Sisyrinchium striatum
Allium schubertii
Dianthus gratianopolitanus 'Firewitch'
Asarina scandens
Euphorbia dulcis 'Chameleon'
Hesperis matronalis
Aquilegia vulgaris
Nolina nelsonii
Juniperus sabina ‘Blue Forest’
Baptisia 'Chocolate Chip'
Yucca gloriosa
Ligustrum vulgare and cvs.
Agave 'Sharkskin'
Laburnum  × watereri
Rhus aromatica ‘Gro-low’
Euphorbia inneuphdia
Choisya ternata 'Sundance'
Thymus pseudolanuginosus
Sedum sieboldii
Elymus arenarius
Pennisetum setaceum 'Fireworks'
Larix kaempferi
Ipomoea  × multifida
Chrysogonum virginianum ‘Eco-Lacquered Spider’
Draba aizoides
Thymophylla tenuiloba
Evolvus Blue My Mind™
Salvia canariensis
Chamaemelum nobile and cvs.
Agastache 'Desert Sunrise'
Euphorbia griffithii
Salvia 'Indigo Spires'
Yucca filamentosa ‘Golden Sword’
Panicum virgatum ‘Heavy Metal’
Talinum paniculatum
Sorghastrum nutans 'Indian Steel'
Echinacea 'Art's Pride'
Euphorbia cotinifolia
Penstemon palmeri
Aruncus dioicus
Mirabilis multiflora
Salvia 'Maraschino'
Echinacea 'Sunset'
Viola ‘Etain’
Lewisia tweedyi
  Sempervivumarachnoideum 'Forest Frost'
Salvia officinalis 'Icterina'
Solidago nemoralis
Delosperma 'John Proffit'
Hakea laurina
Allium senescens var. glaucum
Vinca minor and cvs.
Echinacea purpurea
Cotoneaster horizontalis
Aster oblongifolius 'October Skies'
Metasequoia glyptostroboides
Bouteloua gracilis 'Hachita'
Crocus speciosus
Pelargonium sidoides
Echinacea purpurea ‘Bright Star’
Calocedrus decurrens