| E |
| Ebony spleenwort, Asplenium platyneuron |
| Echo rose, Rosa 'Echo' |
| Edward D. Uber water lily, Nymphaea 'Edward D. Uber' |
| Egyptian paper reed, Cyperus papyrus |
| Elaeagnus, Elaeagnus x ebbingii |
| Elaeagnus, Fruitland, Elaeagnus pungens 'Fruitlandii' |
| Elaeagnus, Thorny, Elaeagnus pungens |
| Elder, Salt marsh, Baccharis halimifolia |
| Elder, Scarlet, Sambucus pubens |
| Elderberry, American, Sambucus canadensis |
| Elderberry, American, Sambucus canadensis |
| Elderberry, European, Sambucus nigra |
| Elderberry, Red, Sambucus pubens |
| Elderberry, Red, Sambucus pubens |
| Elderberry, Scarlet, Sambucus pubens |
| Elecampane, Inula helenium |
| Election pink, Rhododendron prinophyllum = R. roseum |
| Electron rose, Rosa 'Electron' |
| Elephant ears, Colocasia esculenta |
| Elephant's ear, Colocasia |
| Elina rose, Rosa 'DICjana' |
| Elizabeth Taylor rose, Rosa 'Elizabeth Taylor' |
| Ellisiana water lily, Nymphaea 'Ellisiana' |
| Elm, American, Ulmus americana |
| Elm, Cathedral, Ulmus x 'Cathedral' |
| Elm, Chinese, Ulmus parvifolia |
| Elm, Homestead, Ulmus 'Homestead' |
| Elm, Hybrid, Ulmus parvifolia x U. wallichanan |
| Elm, Lace bark, Ulmus parvifolia |
| Elm, Siberian, Ulmus pumila |
| Elm, Slippery, Ulmus rubra |
| Elm, Smoothleaf, Ulmus carpinifolia |
| Elm, Tabletop Scotch, Ulmus galbra 'Horizontalis' |
| Elm, Winged, Ulmus alata |
| Elmhurst rose, Rosa 'Elmurst' |
| Emera Blanc rose, Rosa 'Emera Blanc' |
| Emily Grant Hutchings water lily, Nymphaea 'Emily Grant Hutchings' |
| Empress Josephine rose, Rosa 'Francofurtana' |
| Empress tree; Princess tree, Paulownia tomentosa |
| English daisy, Bellis perennis |
| English Garden rose, Rosa 'AUSbuff' |
| Enkianthus, Redvien, Enkianthus campanulatus |
| Epaulettetree, Little, Pterostyrax corymbosa |
| Epaulettetree, Pterostyrax hispidus |
| Epimedium, Bicolor; Bicolor barrenwort, Epimedium x versicolor 'Sulphureum' |
| Epimedium, Epimedium spp. |
| Epimedium, Red; Red barrenwort, Epimedium x rubrum |
| Epimedium, White, Epimedium x youngianum 'Niveum' |
| Epimedium, Yellow, Epimedium x perralchicum |
| Escallonia, Red, Escallonia rubra |
| Essex rose, Rosa 'POULnoz' |
| Eucalyptus, Eucalyptus spp. |
| Eucalyptus, Eucalyptus cinerea |
| Eucrosia |
| Euonymus, Compact winged, Euonymus alatus 'Compactus' |
| Euonymus, Emerald Gaiety, Euonymus fortunei 'Emerald Gaiety' |
| Euonymus, European, Euonymus europaeus |
| Euonymus, Japanese, Euonymus japonicus |
| Euonymus, Silver Queen, Euonymus fortunei 'Silver Queen' |
| Euonymus, Spreading, Euonymus kiautschovicus |
| Euonymus, Winged, Euonymus alatus |
| Euonymus, Winterberry, Euonymus bungeanus |
| Euonymus, Wintercreeper, Euonymus fortunei |
| Euonymus, Wintercreeper, Euonymus fortunei var. radicans |
| Euonymus, Wintercreeper; Japanese euonymus, Euonymus fortunei |
| Euonymus, Yeddo, Euonymus hamiltonianus |
| Euphorbia, Cushion; Cushion spurge, Euphorbia polychroma |
| Euphorbia, Myrtle, Euphorbia myrsinites |
| Euphorbia, Robb's, Euphorbia robbiae |
| Euptellea, Euptellea polyvandra |
| Europeana rose, Rosa 'Europeana' |
| Evening primrose, Oenothera biennis |
| Evening Star rose, Rosa 'JACven' |
| Evergold striped weeping sedge; Oshima kan suge, Carex oshimensis 'Evergold' |
| Evergreen wood fern; Fancy fern; Intermediate shield fern, Dryopteris intermedia; Dryopteris spinulosa var. intermedia |
| Evergreen woodfern; Marginal woodfern; Leather wood fern, Dryopteris marginalis |
| Everlasting pea, Lathyrus grandiflours |
| Everlasting pea, Lathyrus latifolius |
| Everlasting pea, Lathyrus latifolius |
| Excelsa rose, Rosa 'Excelsa' |
| Exception rose, Rosa 'Rotesmeer' |
| Exotic Chantoli rose, Rosa 'Exotic Chantoli' |