| Flax, perennial, Linum perenne |
| Foamflower, Tiarella cordifolia |
| Four-o'clock, Mirabilis jalapa |
| Foxglove, Digitalis purpurea |
| Foxtail lily, Eremurus spp. |
| Garden phlox, Phlox paniculata |
| Gas plant, Dictamnus albus |
| Gaura, white, Gaura lindheimeri |
| Gayfeather, spike, Liatris spicata |
| Gerbera daisy, Gerbera jamesonii |
| Ginger, white, Hedychium coronarium |
| Ginger, wild, Asarum spp. |
| Gladiolus, byzantine , Gladiolus byzantinus |
| Globe thistle, Echinops ritro |
| Globeflower, Trollius x cultorum |
| Goat's beard, Aruncus dioicus |
| Goldenrod, Solidago spp., S. hybrids |
| Green and gold, Chrysogonum virginianum |
| Heliopsis, Heliopsis helianthoides |
| Heliotrope, creeping , Heliotropium amplexicaule |
| Hibiscus, red, Hibiscus coccineus |
| Hollyhocks, Alcea rosea |
| Hosta, Hosta spp. |
| Hyacinth bletilla, Bletilla striata |
| Hyssop, Agastache foeniculum |
| Ice plant, hardy, Delosperma cooperi |
| Iris, Iris cristata |
| Iris, Japanese roof, Iris tectorum |
| Jacob's ladder, Polemonium |
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Images: ©Alice B. Russell and Erv Evans
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