Neoregelia x 'Fireball' Neoregelia x 'Green Apples'
Neoregelia x 'King of Kings' Neoregelia x 'Purple Wave'
Neoregelia x 'Royal Burgundy' Neoregelia x 'Tangerine'
Neoregelia carolinae Neoregelia carolinae 'Variegata'
Neoregelia carolinae var. tricolor Neoregelia concentrica
Neoregelia concentrica 'Albu Marginatai' Neoregelia concentrica 'Bullis'
Neoregelia farinosa Neoregelia fosperier 'Variegata Perfectrum'
Neoregelia kautskyi Neoregelia spectabilis
Nepenthes spp. Nepenthes ventricosa
Nepeta x 'Dawn to Dusk' Nepeta x faassenii
Nepeta x faassenii 'Blue Wonder' Nepeta x faassenii 'Dropmore'
Nepeta x faassenii 'Six Hills Giant' Nepeta x faassenii 'Snowflake'
Nepeta x faassenii 'Souvenir d'Andre Chaudron' Nepeta x faassenii 'Walker's Low'
Nepeta sibirica Nepeta subsessilis
Nephrolepis biserrata Nephrolepis biserrata 'Furcans'
Nephrolepis exaltata Nephrolepis exaltata 'Aurea'
Nephrolepis exaltata 'Bostoniensis' Nephrolepis exaltata 'Crispa'
Nephrolepis exaltata 'Dallas' Nephrolepis exaltata 'Fluffy Ruffles'
Nephrolepis exaltata 'Kimberly Queen' Nephrolepis exaltata 'Portor's Rossevelt'
Nephrolepis laurifolia Nephrophyllidium crista-galli
Neptunia aquatica Neptunia oleracea
Nerium oleander Nerium oleander 'Apple Blossom'
Nerium oleander 'Calypso' Nerium oleander 'Isle of Capri'
Nerium oleander 'Petite Pink' Nerium oleander 'Petite Salmon'
Nerium oleander 'Sister Agnes' Nertera granadensis
Nicotiana alata Nicotiana alata 'Avalon Bright Pink'
Nicotiana alata 'Havana Appleblossom' Nicotiana alata 'Nikki Lime'
Nicotiana alata 'Nikki Mix' Nicotiana alata 'Nikki Pink'
Nicotiana alata 'Nikki Rose' Nicotiana langsdorffii
Nicotiana x sanderae 'Avalon Bright Pink' Nicotiana x sanderae 'Avalon Salmon'
Nicotiana x sanderae 'Heaven Scent Mix' Nicotiana x sanderae 'Perfume Deep Purple'
Nicotiana x sanderae 'Perfume Lime' Nicotiana sylvestris
Nicotiana tabacum Nidularium fulgens
Nidularium innocentii var. striatum Nierembergia hippomanica
Nierembergia hippomanica 'Mont Blanc' Nierembergia repens
Nigella damascena Nigella orientalis
Nipponanthemum nipponicum Nolana paradoxa
Nolina bigelowii Nolina interrata
Nolina matapensis Nolina microcarpa
Nolina recurvata Nolina stricta
Noronhia emarginata Notelaea microcarpa
Nothofagus antarctica Nothofagus dombeyi
Nothofagus obliqua Nuphar capensis
Nuphar polysepala Nuxia floribunda