| N |
| Nagasa bamboo, Sasa veitchii |
| Nailwort, Paronychia kapela |
| Naked lady, Amaryllis belladonna |
| Nandina, Fire Power, Nandina domestica 'Fire Power' |
| Nandina, Gulf Stream, Nandina domestica 'Gulf Stream' |
| Nandina, Harbour Dwarf, Nandina domestica 'Harbour Dwarf' |
| Nandina, Nandina domestica |
| Nandina, Plum Purple, Nandina domestica 'Plum Purple' |
| Nandina, San Gabriel, Nandina domestica 'San Gabriel' |
| Nandina, Umpqua Chief, Nandina domestica 'Umpqua Chief' |
| Nandina, White berry, Nandina domestica 'Alba' |
| Nandina, Wood's Dwarf, Nandina domestica 'Wood's Dwarf' |
| Narcissus, Paperwhite, Narcissus (Paperwhites) - Tender III |
| Narrow leaf spleenwort; Glade fern, Athyrium pycnocarpon; Diplazium pycnocarpon |
| Narrow swamp fern; Crested wood fern, Dryopteris cristata |
| Nastarana rose, Rosa 'Nastarana' |
| Nasturtium, Climbing, Tropaeolum majus |
| Nasturtium, Tropaeolum majus |
| Navada rose, Rosa 'Navada' |
| Navelwort, Omphalodes linifolia |
| Nearly Wild rose, Rosa 'Nearly Wild' |
| Necklace weed; Doll's Eyes; Baneberry; White cohosh, Actaea pachypoda |
| Nectarine, 'White Glory' weeping, Prunus persica var. nucipersica 'White Glory' |
| Needle grass; Esparto grass; Mexican feather grass, Stipa tenacissima |
| Neillia, Chinese, Neillia sinensis |
| Nemophila, Nemophila menziesii |
| Neon Lights rose, Rosa 'JACout' |
| Netted chain fern, Woodwardia areolata = W. angustifolia |
| Nettle, Dead; Lamium; Spotted dead nettle, Lamium maculatum |
| Nettle, Golden dead; Yellow archangel, Lamium galeobdolon |
| New Beginning rose, Rosa 'SAVabeg' |
| New Dawn rose, Rosa 'New Dawn' |
| New Day rose, Rosa 'New Day' |
| New Era rose, Rosa 'WEKwinwin' |
| New Jersey tea; Mountain snowbell, Ceanothus americanus |
| New York fern; Tapering fern, Thelpteris novaboracensis |
| New Zealand rose, Rosa 'MACgenev' |
| New Zeland flax, Phormium texax |
| Newton water lily, Nymphaea 'Newton' |
| Nicotiana, Nicotiana alata |
| Nierembergia, Nierembergia hippomanica |
| Nigella; Love-in-a-mist, Nigella damascena |
| Night 'n' Day rose, Rosa 'Night'n'Day' |
| Ninebark, Eastern, Physocarpus opulifolius |
| Ninebark, Physocarpus opulifolius |
| Ninebark, Physocarpus opulifolius |
| Ninety Niner rose, Rosa 'WEKwinwin' |
| Nomocharis |
| Northern maidenhair fern; Common maidenhair, Adiantum pedatum |
| Nympenberg rose, Rosa 'Nympenberg' |