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Scientific Name Common Name(s) Plant Category Image
Hymenocallis crassifolia Spider lily Poisonous Plants, Water Garden
Hymenocallis occidentalis Spider lily Poisonous Plants, Wildflowers
Hymenocallis spp. Basket flower, Ismene, Peruvian daffodil, Sea daffodil, Spider lily Poisonous Plants, Summer Bulbs
Hyoscyamus niger Henbane, black henbane Poisonous Plants
Hypericum androsaemum 'Matisse' Expressionistic™ Tutsans, Tutsans Shrubs
Hypericum androsaemum 'Picasso' Expressionistic™ Tutsans Shrubs
Hypericum androsaemum 'Pollock' Expressionistic™ Tutsans, Tutsans Shrubs
Hypericum calycinum Aaron's beard, St. John's wort Groundcover
Hypericum frondosum Native Plants, Perennials, Shrubs, Wildflowers
Hypericum galioides Bedstraw St. John's wort Shrubs
Hypericum kalmianum Kalm's St. John's wort Shrubs
Hypericum perforatum Common St. John's-wort Groundcover, Perennials, Wildflowers
Hypericum prolificum Shrubby St. John's wort, St. John's wort Native Plants, Shrubs
Hypochoeris radicata Cat's ear Wildflowers
Hypoestes phyllostachya Freckle face, Polka dot plant Annuals
Hypolepis repens Bramble fern Ferns
Hypoxis hirsuta Yellow star-grass Wildflowers
Hyssopus officinalis Hyssop Edible Plants, Herbs
Iberis amara Candytuft Annuals, Groundcover
Iberis sempervirens Candytuft, Evergreen candytuft Groundcover, Perennials
Iberis umbellata Annual candytuft, Globe candytuft Annuals
Ilex × koehneana 'Martha Berry' Martha Berry holly Trees
Ilex aquifolium English holly Shrubs, Trees
Ilex cassine Dahoon Holly Native Plants, Trees
Ilex cassine var. myrtifolia Myrtle leaf holly Native Plants, Shrubs
Ilex cornuta Chinese holly Shrubs, Trees
Ilex cornuta 'Burfordii' Burford holly Shrubs
Ilex cornuta 'Carissa' Carissa holly, Dwarf Chinese holly Shrubs
Ilex cornuta 'D'Or' D'Or Chinese holly, Yellow-berry Chinese holly Shrubs
Ilex cornuta 'Dwarf Burford' Dwarf Burford holly Shrubs, Trees
Ilex cornuta 'Needlepoint' Chinese holly, Needlepoint holly Shrubs
Ilex cornuta 'O'Spring' O'Spring Chinese holly Shrubs
Ilex cornuta 'Rotunda' Dwarf Chinese holly, Rotunda holly Shrubs
Ilex crenata Japanese holly Shrubs
Ilex crenata 'Convexa' Convexa Japanese holly Shrubs
Ilex crenata 'Helleri' Helleri holly Shrubs
Ilex crenata 'Hetzii' Hetz's Japanese holly Shrubs
Ilex crenata 'Soft Touch' Shrubs
Ilex crenata 'Stokes' Japanese holly Shrubs
Ilex decidua Possum haw holly, Possumhaw holly Native Plants, Trees
Ilex glabra Appalachian tea, Gallberry, Inkberry Native Plants, Shrubs
Ilex hybrids Deciduous Holly hybrids Trees
Ilex latifolia Lusterleaf Holly Shrubs, Trees
Ilex montana Mountain holly Native Plants, Trees
Ilex opaca American holly, Holly Native Plants, Poisonous Plants, Trees
Ilex pedunculosa Longstalk holly Trees
Ilex pernyi Perny holly Shrubs
Ilex purpurea Purple holly Trees
Ilex verticillata Black alder, Winterberry, Winterberry Holly Native Plants, Shrubs, Trees
Ilex verticillata x I. serata hybrids Winterberry Shrubs