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Scientific Name Common Name(s) Plant Category Image
Gnaphalium spp. Cud weed, Cudweed Annuals, Herbs, Perennials
Gomphrena globosa Globe amaranth Annuals
Goodyera pubescens Downy rattlesnake plantain, Rattlesnake plantain Perennials, Wildflowers
Gordonia lasianthus Loblolly bay Native Plants, Trees
Gratiola viscidula Hedge hyssop Wildflowers
Grevillea spp. Grevillea 'Robyn Gordon', Silky oak, silver oak Poisonous Plants
Gymnocladus dioicus Kentucky coffee tree, Kentucky coffeetree Poisonous Plants, Trees
Gynura aurantiaca Purple velvet plant Perennials
Gypsophila elegans Baby's breath (annual) Annuals
Gypsophila paniculata Baby's breath Perennials, Poisonous Plants
Habenaria flava Pale green orchis, Southern rein-orchis Wildflowers
Habenaria lacera Green fringed orchid, Ragged fringed orchid Perennials, Wildflowers
Habenaria orbiculata Large round-leaf orchid, Round-leaved orchis Wildflowers
Habenaria viridis var. bracteata Long-bracted orchis Wildflowers
Habranthus Rain lily Summer Bulbs
Hakonechloa macro Hakone grass Ornamental Grass
Hakonechloa macro Aureola Golden hakonech loa Ornamental Grass
Halesia carolina Carolina silverbell, Mountain silverbell Native Plants, Trees
Halesia diptera American snowdrop tree, Two-winged silver bell Native Plants, Trees
Halesia tetraptera Carolina silverbell Trees
Halesia tetraptera var. monticola Mountain silverbell Trees
Hamamelis macrophylla Southern witch hazel Shrubs, Trees
Hamamelis mollis Chinese witch hazel, Chinese witchhazel Shrubs, Trees
Hamamelis vernalis Ozark witch hazel, Vernal witch hazel Native Plants, Shrubs, Trees
Hamamelis virginiana Common witch hazel, Witch hazel Native Plants, Shrubs, Trees
Hamamelis x intermedia, H. x media Hybrid witchhazel Trees
Hedera canariensis Algerian ivy, Canary Island ivy, Canary ivy, Coney Island ivy, Madeira ivy Groundcover, Poisonous Plants, Vines
Hedera colchica Colchis ivy, Persian ivy Groundcover, Vines
Hedera helix English ivy, common ivy Groundcover, Poisonous Plants, Vines
Hedera rhombea Japanese ivy Vines
Hedychium coronarium White ginger Perennials
Helenium autumnale Common sneezeweed, Sneezeweed Native Plants, Perennials, Poisonous Plants, Wildflowers
Helenium flexuosum Purple-headed sneezeweed Native Plants, Poisonous Plants, Wildflowers
Helenium spp. Sneezeweed Native Plants, Poisonous Plants, Wildflowers
Helianthus angustifolius Narrow Leaf Sunflower Native Plants, Perennials, Wildflowers
Helianthus annuus Sunflower Annuals
Helianthus divaricatus Woodland sunflower Wildflowers
Helianthus spp. Sunflower Perennials, Wildflowers
Helictotrichon sempervirens Blue oats grass Groundcover
Helictotrichor sempervirens Blue oats grass Ornamental Grass
Heliopsis helianthoides Heliopsis, Oxeye Sunflower , Ox-eye Perennials, Wildflowers
Heliotropium amplexicaule Creeping heliotrope Perennials, Poisonous Plants
Heliotropium arborescens Heliotrope Annuals, Poisonous Plants
Heliotropium spp. Heliotrope Poisonous Plants
Helleborus argutifolius Corsican Hellebore Poisonous Plants
Helleborus foetidus Bearsfoot hellebore, stinking hellebore Poisonous Plants
Helleborus niger Christmas rose Poisonous Plants
Helleborus orientalis Christmas rose, Helleborus, Lenten rose Groundcover, Perennials, Poisonous Plants
Helleborus x hybridus Lenten rose Perennials
Helonias bullata Swamp-pink Wildflowers