Mulberry, Black Mulberry, Common (spp.)
Mulberry, Common 'Paper Dolls' Mulberry, French
Mulberry, Red Mulberry, White (spp.)
Mulberry, White 'Paper Dolls' Mulberry: alba tartarica, White
Mulga, True Mullein, Common
Multiflora Rose 'Verdun' Munz Cholla
Muscadine Grape 'Musfe' Columbine
'My Castle' Lupine 'My Monet™' Old Fashioned Weigela
'My Pretty Valentine' Tall Bearded German Iris 'My Ways' Daylily
'Myers' Asparagus Fern Myrobalan Plum (spp.)
Myrobalan Plum 'Atropurpurea' Myrobalan Plum 'Hessei'
Myrobalan Plum 'Mount Saint Helens' Myrobalan Plum 'Nigra'
Myrobalan Plum 'Thundercloud' Myrtle Dahoon
Myrtle Holly 'Mystic Meidiland®' Rose
Nailrod 'Nana Purpurea' Heavenly Bamboo
Nanking Cherry Narrow Leaf Evening Primrose (spp.)
Narrow Leaf Ironweed 'Iron Butterfly' Narrow-Leaf Sunflower (spp.)
Nashi Pear Nasturtium 'Whirlybird Cream'
Native Willow Nealie
Needle Palm (spp.) Needle Palm 'Bright Edge'
Needle Palm 'Color Guard' Needle Palm 'Golden Sword'
Needle Palm Variegated Needle Palm: hystrix
Needle-bush Wattle 'Neon Lights' Rose
Nerve Plant: macdougalii, Red Netleaf Barberry
Netleaf Hackberry Nettle, White Hedge
Nevin's Barberry Nevin's Mahonia
'New Beginning' Rose 'New Dawn' Rose
New England Aster (spp.) New England Aster 'Alert'
New England Aster 'Alma Potschke' New England Aster 'Bressingham Pink'
New England Aster 'Purple Dome' New England Aster 'Red Star'
New England Aster 'Treasurer' 'New Gold' Lantana
New Mexico Agave 'New Millennium Mix' English Larkspur
New Zealand Chastetree New Zealand Mahogany
New Zealand Teak 'Newport' Brush Cherry
Newport Cherry Plum (spp.) Newport Cherry Plum 'Atropurpurea'
Newport Cherry Plum 'Hessei' Newport Cherry Plum 'Mount Saint Helens'
Newport Cherry Plum 'Nigra' Newport Cherry Plum 'Thundercloud'
'Newport Dam' Flowering Dogwood 'Newton Sentry' Sugar Maple
Nicotiana (spp.) Nicotiana 'Avalon Bright Pink'
'Night Watch' Hairy Alumroot 'Nigra' American Arborvitae
'Nigra' Cherry Plum 'Nigra' Gallberry Holly
Nikau Palm 'Nitche's Choice' Butterflybush
'Nora Grant' Flame of the Woods 'Nora Leigh' Summer Phlox