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Scientific Name Common Name(s) Plant Category Image
Helleborus orientalis Christmas rose, Helleborus, Lenten rose Groundcover, Perennials, Poisonous Plants
Helleborus x hybridus Lenten rose Perennials
Hemerocallis sp. Day Lily Perennials, Summer Bulbs
Hemerocallis spp., H. hybrids Daylily Perennials
Hepatica americana Round-lobed hepatica Perennials, Wildflowers
Heuchera 'Palace Purple' Palace purple alumroot Perennials
Heuchera sanguinea Coral bells Perennials
Heuchera villosa Hairy alumroot Perennials, Wildflowers
Hibiscus coccineus Red hibiscus Native Plants, Perennials
Hibiscus moscheutos Rose mallow, Swamp mallow, Swamp rose-mallow, Wild cotton Native Plants, Perennials, Wildflowers
Hibiscus ‘Fireball’ Perennials, Shrubs
Hosta spp. Hosta Perennials
Houstonia caerulea Common bluets Annuals, Native Plants, Perennials, Wildflowers
Hydrangea paniculata ‘Limelight’ PP #12874 Limelight hydrangea Perennials, Shrubs
Hylotelephium sieboldii Japanese stonecrop Groundcover, Perennials
Iberis sempervirens Candytuft, Evergreen candytuft Groundcover, Perennials
Inula britannica L. British elecampane, British yellowhead, Elecampane, Meadow fleabane Herbs, Perennials
Ipomoea spp. Cypress vine, Morning glory Annuals, Perennials, Vines, Wildflowers
Iresine herbstii Beefsteak, Bloodleaf, Chicken gizzard, Formosa bloodleaf Annuals, Perennials
Iris cristata Crested dwarf iris, Iris Native Plants, Perennials, Poisonous Plants, Wildflowers
Iris germanica Bearded iris, German iris, Rhizomatous iris Perennials, Poisonous Plants, Summer Bulbs
Iris tectorum Japanese roof iris, Roof iris, Wall iris Groundcover, Perennials, Poisonous Plants
Kniphofia uvaria Red hot poker Perennials
Lamium maculatum Dead nettle, Lamium, Spotted dead nettle Groundcover, Perennials
Lantana camara Common lantana, Lantana, Red sage, Yellow sage, shrub verbena Annuals, Groundcover, Perennials, Poisonous Plants, Shrubs