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 |
| Houstonia longifolia | Longleaf Summer Bluet Pale Bluets | |
| Honckenya peploides | Seaside Sandplant | |
| Honckenya peploides ssp. robusta | Seaside Sandplant | |
| Hordeum pusillum | Little Barley | |
| Houstonia purpurea | Venus's Pride Large Houstonia Woodland Bluets Purple Bluets Mountain Bluets | |
| Houstonia purpurea var. calycosa | Venus' Pride Purple Bluets | |
| Hudsonia ericoides | Pine Barren Goldenheather Pinebarren Goldenheather | |
| Humulus lupulus | Common Hop | |
| Huperzia lucidula | Shining Firmoss Shining Clubmoss | |
| Humulus lupulus var. lupuloides | Common Hop | |
| Huperzia porophila | Rock Clubmoss | |
| Hudsonia tomentosa | Woolly Beachheather Beach Heath | |
| Hudsonia tomentosa var. tomentosa | Woolly Beachheather Woolly Beach-heather False Heather | |
| Hypericum adpressum | Creeping St. John's-wort | |
| Hydrocotyle americana | American Marshpennywort Water-pennywort | |
| Hydrangea arborescens | Smooth Hydrangea Wild Hydrangea Sevenbark | |
| Hypericum ascyron | Great St. John's-wort Giant St. John's-wort | |
| 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 | |
| Hypericum canadense | Lesser Canadian St. John's-wort | |
| Hybanthus concolor | Eastern Greenviolet Green Violet | |
| Hypericum crux-andreae | St. Peter's-wort Atlantic St. Peter's-wort St. Peter's Cross St. John's-wort | |
| Hypericum densiflorum | Bushy St. John's-wort | |
| Hypericum denticulatum | Coppery St. John's-wort | |
| Hypericum dissimulatum | Disguised St. John's-wort | |
| Hypericum ellipticum | Pale St. John's-wort | |
| Hypericum gentianoides | Orangegrass Pineweed | |
| Hypericum gymnanthum | Claspingleaf St. John's-wort | |
| Hypoxis hirsuta | Common Goldstar Yellow Star-grass Eastern Yellow Star-grass | |
| Hypericum hypericoides | St. Andrew's-cross | |
| Hypericum hypericoides ssp. hypericoides | St. Andrew's-cross | |
| Hypericum hypericoides ssp. multicaule | St. Andrew's-cross | |
| Hypericum majus | Large St. John's-wort | |
| Hypericum mutilum | Dwarf St. John's-wort | |
| Hypericum prolificum | Shrubby St. John's-wort | |
| Hydrocotyle prolifera | Whorled Marshpennywort | |
| Hypericum punctatum | Spotted St. John's-wort | |
| Hydrocotyle ranunculoides | Floating Marshpennywort Floating Marsh-Pennywort Floating Marsh Pennywort Floating Pennyroyal | |
| 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 | |
| Hydrophyllum virginianum var. virginianum | Eastern Waterleaf Virginia Waterleaf | |
| Ilex glabra | Inkberry Gallberry | |
| Ilex laevigata | Smooth Winterberry | |
| Ilex montana | Mountain Holly Mountain Winterberry | |
| Ilex mucronata | Catberry | |
| Ilex opaca | American Holly White Holly Prickly Holly Evergreen Holly Christmas Holly Yule Holly | |
| Ilex opaca var. opaca | American Holly Christmas Holly Evergreen Holly Prickly Holly White Holly Yule Holly | |
| Ilex verticillata | Common Winterberry Winterberry Michigan Holly Black Alder | |
| Impatiens capensis | Jewelweed Orange Jewelweed Spotted Touch-me-not | |
| Impatiens pallida | Pale Touch-me-not Yellow Jewelweed | |
| Ionactis linariifolius | Flaxleaf Whitetop Aster Stiff Aster Flaxleaf Aster | |
| Iodanthus pinnatifidus | Purplerocket Purple Rocket Purple-rocket Violet-rocket | |
| Ipomoea lacunosa | Whitestar White Morning-glory Pitted Morningglory Small White Morning Glory | |
| Ipomoea pandurata | Man Of The Earth Wild Potato Wild Sweet Potato Manroot | |
| Ipomopsis rubra | Standing Cypress Texas Plume Red Texas Star Red Gilia | |
| Iris prismatica | Slender Blue Iris Slender Blue Flag Coastal Iris | |
| Iris versicolor | Harlequin Blueflag Northern Blue Flag Large Blue Iris | |
| Iris virginica | Virginia Iris Great Blue Flag Southern Blue Flag | |
| Iris virginica var. shrevei | Shreve's Iris Virginia Iris Southern Blue Flag Blue Flag | |
| Isoetes acadiensis | Acadian Quillwort | |
| Isoetes ×brittonii | Britton's Quillwort Quillwort | |
| Isoetes ×dodgei | Dodge's Quillwort Quillwort | |
| Isoetes ×eatonii | Eaton's Quillwort Quillwort | |
| Isoetes engelmannii | Engelmann's Quillwort Appalachian Quillwort | |
| Isoetes ×fairbrothersii | Quillwort | |
| Isoetes ×foveolata | Pitted Quillwort Quillwort | |
| Isoetes lacustris | Lake Quillwort Merlin's-grass | |
| Isoetes melanopoda | Blackfoot Quillwort | |
| Isotria medeoloides | Small Whorled Pogonia Green Fiveleaf Orchid | |
| Isoetes riparia | River Bank Quillwort River Quillwort Shore Quillwort | |
| Isoetes riparia var. amesii | Ames' Quillwort River Bank Quillwort River Quillwort | |
| Isoetes riparia var. riparia | River Bank Quillwort River Quillwort Shore Quillwort | |
| Isoetes tenella | Spiny-spore Quillwort | |
| Isoetes tuckermanii | Tuckerman's Quillwort | |
| Isotria verticillata | Large Whorled Pogonia Purple Fiveleaf Orchid | |
| Itea virginica | Virginia Sweetspire Tassel-white Virginia Willow | |
| 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 | |
| Jeffersonia diphylla | Twinleaf | |
| Juncus acuminatus | Tapertip Rush | |
| Justicia americana | American Water-willow Water-willow | |
| Juncus articulatus | Jointleaf Rush Jointed Rush | |
| Juncus arcticus ssp. littoralis | Baltic Rush | |
| Juncus biflorus | Bog Rush | |
| Juncus brachycarpus | Whiteroot Rush | |
| Juncus brachycephalus | Smallhead Rush | |
| Juncus brevicaudatus | Narrowpanicle Rush | |
| Juncus bufonius | Toad Rush | |
| Juncus bufonius var. bufonius | Toad Rush | |
| Juncus caesariensis | New Jersey Rush | |
| Juncus canadensis | Canadian Rush Canada Rush | |
| Juglans cinerea | Butternut White Walnut | |
| Juncus coriaceus | Leathery Rush | |
| Juniperus communis | Common Juniper | |
| Juniperus communis var. depressa | Common Juniper Old Field Juniper Prostrate Juniper | |
| scientific name | common name(s) | image gallery |
