Fraxinus americana Fraxinus americana 'Autumn Applause'
Fraxinus americana 'Champaign County' Fraxinus americana 'Junginger (Autumn Purple®)'
Fraxinus americana 'Kleinburg' Fraxinus americana 'Rosehill'
Fraxinus americana 'Tures (Windy City™)' Fraxinus caroliniana
Fraxinus pennsylvanica Fraxinus pennsylvanica 'Aucubifolia'
Fraxinus pennsylvanica 'Patmore' Fraxinus pennsylvanica 'Summit'
Fraxinus pennsylvanica var. subintegerrima Fraxinus quadrangulata
Fraxinus texensis Fraxinus uhdei
Fraxinus velutina Fremontodendron x 'Ken Taylor'
Fremontodendron x 'Pacific Sunset' Fremontodendron californicum
Fremontodendron californicum ssp. decumbens Fremontodendron mexicanum
Gaillardia aristata Gaillardia aristata 'Arizona Sun'
Gaillardia aristata 'Bijou' Gaillardia pinnatifida
Gaillardia pulchella Gaillardia pulchella 'Red Plume'
Gaillardia pulchella 'Yellow Plume' Gaillardia pulchella 'Yellow Sun'
Galphimia glauca Galvezia speciosa
Garrya elliptica Gaultheria procumbens
Gaultheria shallon Gaura 'So White'
Gaura sinuata Gaylussacia brachycera
Gelsemium sempervirens Gentiana clausa
Geranium maculatum Geranium maculatum 'Elizabeth Ann'
Geranium maculatum 'Espresso' Geum coccineum 'Borisii'
Geum rivale Geum triflorum
Gilia tricolor Gillenia trifoliata
Gleditsia triacanthos Gleditsia triacanthos 'Elegantissima'
Gleditsia triacanthos 'Nana' Gleditsia triacanthos f. inermis 'Emerald Kascade'
Gleditsia triacanthos f. inermis 'Halka' Gleditsia triacanthos f. inermis 'Imperial'
Gleditsia triacanthos f. inermis 'Moraine' Gleditsia triacanthos f. inermis 'Shademaster'
Gleditsia triacanthos f. inermis 'Skyline' Gleditsia triacanthos f. inermis 'Summer Lace'
Gleditsia triacanthos f. inermis 'Sunburst' Gleditsia triacanthos f. inermis 'True Shade'
Goodyera pubescens Gossypium hirsutum
Graptopetalum paraguayense Grindelia stricta ssp. venulosa
Guaiacum sanctum Gymnocarpium dryopteris
Gymnocarpium dryopteris 'Plumosum' Gymnocladus dioicus
Gymnocladus dioicus 'Variegata' Habenaria lacera
Halesia diptera Halesia diptera var. magniflora
Halesia monticola Halesia tetraptera
Halesia tetraptera 'Rosea' Hamamelis vernalis
Hamamelis vernalis 'Autumn Embers' Hamamelis vernalis 'Carnea'
Hamamelis vernalis 'Sandra' Hamamelis virginiana
Hamelia patens Hechtia stenopetala
Heimia salicifolia Helenium autumnale
Helenium hoopesii Helenium puberulum