Combination search
Looking for commercially available native plant species suitable to your state or region, try the Recommended Species page.
| scientific name | common name(s) | image gallery |
| Helianthus microcephalus | Small Woodland Sunflower | |
| Helianthus mollis | Ashy Sunflower Downy Sunflower | |
| Hepatica nobilis | Hepatica | |
| Hepatica nobilis var. acuta | Sharplobe Hepatica Sharp-lobed Hepatica Mountain Hepatica | |
| Hepatica nobilis var. obtusa | Roundlobe Hepatica Round-lobed Hepatica Liverleaf | |
| Helianthus occidentalis | Fewleaf Sunflower Western Sunflower | |
| Helianthus occidentalis ssp. occidentalis | Fewleaf Sunflower | |
| Helianthus pauciflorus | Stiff Sunflower Prairie Sunflower | |
| Helianthus pauciflorus ssp. pauciflorus | Stiff Sunflower | |
| Heuchera parviflora var. parviflora | Little-flower Alum-root Little-flower Alumroot Littleflower Alumroot | |
| Helianthemum propinquum | Creeping Frostweed Low Frostweed | |
| Heuchera pubescens | Downy Alumroot | |
| Heteranthera reniformis | Kidneyleaf Mudplantain Kidney-leaf Mud-plantain | |
| Hexastylis shuttleworthii | Largeflower Heartleaf Shuttleworth's Ginger | |
| Hexastylis shuttleworthii var. shuttleworthii | Largeflower Heartleaf | |
| Hexalectris spicata | Spiked Crested Coralroot Spiked Crested Coral Root | |
| Hexalectris spicata var. spicata | Spiked Crested Coralroot Spiked Crested Coral Root | |
| Helianthus strumosus | Paleleaf Woodland Sunflower Paleleaf Sunflower Woodland Sunflower | |
| Helianthus tuberosus | Jerusalem Artichoke Sunchoke | |
| Heuchera villosa | Hairy Alumroot | |
| Hexastylis virginica | Virginia Heartleaf | |
| Helenium virginicum | Virginia Sneezeweed | |
| Heuchera villosa var. villosa | Hairy Alumroot | |
| Hibiscus coccineus | Scarlet Rosemallow Crimson Rosemallow Wild Red Mallow Texas Star Hibiscus | |
| Hieracium gronovii | Queendevil | |
| Hieracium greenii | Maryland Hawkweed | |
| Hieracium marianum | Maryland Hawkweed | |
| Hieracium paniculatum | Allegheny Hawkweed | |
| Hieracium scabrum | Rough Hawkweed | |
| Hieracium scribneri | Scribner's Hawkweed | |
| Hieracium scabrum var. scabrum | Rough Hawkweed | |
| Hieracium venosum | Rattlesnakeweed Rattlesnake Weed | |
| Houstonia caerulea | Azure Bluet Quaker Ladies Bluets | |
| Houstonia canadensis | Canadian Summer Bluet | |
| Houstonia longifolia | Longleaf Summer Bluet Pale Bluets | |
| Honckenya peploides | Seaside Sandplant | |
| Honckenya peploides ssp. robusta | Seaside Sandplant | |
| Houstonia purpurea | Venus's Pride Large Houstonia Woodland Bluets Purple Bluets Mountain Bluets | |
| Houstonia purpurea var. calycosa | Venus' Pride Purple Bluets | |
| Houstonia purpurea var. purpurea | Venus' Pride Large Purple Bluets | |
| Houstonia serpyllifolia | Thymeleaf Bluet | |
| Huperzia appalachiana | Appalachian Firmoss Appalachian Fir-clubmoss Appalachian Clubmoss | |
| Huperzia lucidula | Shining Firmoss Shining Clubmoss | |
| Humulus lupulus var. pubescens | Common Hop | |
| Huperzia porophila | Rock Clubmoss | |
| Hypericum adpressum | Creeping St. John's-wort | |
| Hydrocotyle americana | American Marshpennywort Water-pennywort | |
| Hydrocotyle bonariensis | Largeleaf Pennywort Salt Pennywort | |
| Hypericum boreale | Northern St. John's-wort | |
| Hydrastis canadensis | Goldenseal | |
| Hydrophyllum canadense | Broad-leaved Waterleaf Broadleaf Waterleaf Bluntleaf Waterleaf Blunt-leaved Waterleaf Maple-leaf Waterleaf Maple-leaved Waterleaf Canadian Waterleaf Canada Waterleaf Fool's Seal | |
| Hybanthus concolor | Eastern Greenviolet Green Violet | |
| Hypericum denticulatum | Coppery St. John's-wort | |
| Hypericum ellipticum | Pale St. John's-wort | |
| Hypericum gymnanthum | Claspingleaf St. John's-wort | |
| Hypoxis hirsuta | Common Goldstar Yellow Star-grass Eastern Yellow Star-grass | |
| Hydrophyllum macrophyllum | Largeleaf Waterleaf Large-leaved Waterleaf | |
| Hypericum mitchellianum | Blue Ridge St. John's-wort | |
| Hydrocotyle prolifera | Whorled Marshpennywort | |
| Hypericum punctatum | Spotted St. John's-wort | |
| Hydrolea quadrivalvis | Waterpod | |
| Hydrocotyle ranunculoides | Floating Marshpennywort Floating Marsh-Pennywort Floating Marsh Pennywort Floating Pennyroyal | |
| Hypericum setosum | Hairy St. John's-wort | |
| Hylotelephium telephioides | Allegheny Stonecrop | |
| Hydrocotyle umbellata | Manyflower Marsh-pennywort Many-flowered Marsh-pennywort Marsh Pennywort Water Pennywort Money Plant | |
| Hydrocotyle verticillata | Whorled Marshpennywort | |
| Hydrocotyle verticillata var. verticillata | Whorled Marshpennywort Water-pennywort Pennywort Money-plant | |
| Hydrophyllum virginianum | Virginia Waterleaf Eastern Waterleaf Shawnee Salad | |
| Hypericum virgatum | Sharp-leaf St. John's Wort Sharp-leaf St. John's-wort Sharpleaf St. Johnswort | |
| Hydrophyllum virginianum var. atranthum | Eastern Waterleaf | |
| Hydrophyllum virginianum var. virginianum | Eastern Waterleaf Virginia Waterleaf | |
| Hypoxis wrightii | Wright's Star-grass | |
| Iliamna rivularis | Streambank Wild Hollyhock Wild Hollyhock Mountain Globemallow | |
| Iliamna rivularis var. rivularis | Kankakee Globe-mallow Kankakee Mallow Peter's Mountain Mallow Streambank Globe-mallow Streambank Wild Hollyhock | |
| Ionactis linariifolius | Flaxleaf Whitetop Aster Stiff Aster Flaxleaf Aster | |
| Ipomoea ×leucantha | Whitestar Morning-glory Whitestar Morning Glory Whitestar Morningglory | |
| Ipomoea pandurata | Man Of The Earth Wild Potato Wild Sweet Potato Manroot | |
| Iris cristata | Dwarf Crested Iris | |
| Iris prismatica | Slender Blue Iris Slender Blue Flag Coastal Iris | |
| Iresine rhizomatosa | Judas Bush | |
| Iris verna | Dwarf Violet Iris Vernal Iris Dwarf Iris | |
| Iris versicolor | Harlequin Blueflag Northern Blue Flag Large Blue Iris | |
| Iris verna var. smalliana | Dwarf Violet Iris Mountain Vernal Iris | |
| Iris verna var. verna | Dwarf Violet Iris | |
| Iris virginica | Virginia Iris Great Blue Flag Southern Blue Flag | |
| Iris virginica var. virginica | Virginia Iris Blue Flag Iris | |
| Isoetes engelmannii | Engelmann's Quillwort Appalachian Quillwort | |
| Isoetes lacustris | Lake Quillwort Merlin's-grass | |
| Isotria medeoloides | Small Whorled Pogonia Green Fiveleaf Orchid | |
| Isoetes piedmontana | Piedmont Quillwort | |
| Isotria verticillata | Large Whorled Pogonia Purple Fiveleaf Orchid | |
| Iva frutescens | Jesuit's Bark High-tide Bush High-water Shrub Marsh Elder Bigleaf Marsh Elder | |
| Iva frutescens ssp. frutescens | Jesuit's Bark Bigleaf Marsh-elder High-tide Bush Bigleaf Marsh Elder | |
| Iva frutescens ssp. oraria | Jesuit's Bark Bigleaf Marsh-elder High-tide Bush Bigleaf Marsh Elder | |
| Iva imbricata | Seacoast Marsh Elder | |
| Jeffersonia diphylla | Twinleaf | |
| Justicia americana | American Water-willow Water-willow | |
| Juncus articulatus | Jointleaf Rush Jointed Rush | |
| Juncus effusus var. solutus | Lamp Rush Soft Rush | |
| Justicia ovata | Looseflower Water-willow | |
| scientific name | common name(s) | image gallery |
