Mentha aquatica Mentha aquatica 'Variegata'
Mentha arvensis Mentha x piperita
Mentha x piperita 'Chocolate Mint' Mentha x piperita 'Citrata'
Mentha x piperita 'Orangemint' Mentha x piperita 'Swiss'
Mentha x piperita 'Variegata' Mentha requienii
Mentha spicata 'Emerald and Gold' Mentha spicata 'Kentucky Colonel'
Mentha suaveolens 'Variegata' Menyanthes trifoliolata
Mertensia sibirica Mertensia virginica
Microgramma nitida Microlepia strigosa
Mikania dentata Mikania scandens
Miltonia Miltonia 'Hudson Bay'
Mimulus 'Valentine' Mimulus aurantiacus
Mimulus bifidus Mimulus bigelovii
Mimulus cardinalis Mimulus guttatus
Mimulus luteus 'Yellow Velvet' Mimulus ringens
Minuartia verna Mirabilis jalapa
Miscanthus 'Super Stripe' Miscanthus floridulus
Miscanthus sinensis Miscanthus sinensis 'Adagio'
Miscanthus sinensis 'Autumn Light' Miscanthus sinensis 'Cabaret'
Miscanthus sinensis 'Central Park' Miscanthus sinensis 'Cosmopolitan'
Miscanthus sinensis 'Ferner Olsten' Miscanthus sinensis 'Gracillimus'
Miscanthus sinensis 'Graziella' Miscanthus sinensis 'Huron Sunrise'
Miscanthus sinensis 'Malepartus' Miscanthus sinensis 'Morning Light'
Miscanthus sinensis 'Nippon' Miscanthus sinensis 'Puenktchen'
Miscanthus sinensis 'Purpurascens' Miscanthus sinensis 'Sarabande'
Miscanthus sinensis 'Silberfeder' Miscanthus sinensis 'Strictus'
Miscanthus sinensis 'Variegatus' Miscanthus sinensis 'Yaku Jima'
Miscanthus sinensis 'Zebrinus' Miscanthus sinensis condensatus 'Silverbell'
Mitchella repens Molinia caerulea 'Edith Dudszus'
Molinia caerulea 'Variegata' Molinia caerulea ssp. arundinacea 'Skyracer'
Monarda 'Colrain Red' Monarda 'Donnerwolke'
Monarda 'Petite Wonder' Monarda 'Raspberry Wine'
Monarda didyma Monarda didyma 'Blue Stocking'
Monarda didyma 'Cambridge Scarlet' Monarda didyma 'Croftway Pink'
Monarda didyma 'Gardenview Scarlet' Monarda didyma 'Jacob Cline'
Monarda didyma 'Marshal's Delight' Monarda didyma 'Mrs. Perry'
Monarda didyma 'Panorama' Monarda didyma 'Petite Delight'
Monarda didyma 'Snow White' Monarda didyma 'Squaw'
Monarda fistulosa Monarda punctata
Monardella subglabra Monotropa uniflora
Monstera deliciosa Musa 'Siam Beauty'
Musa acuminata Musa acuminata 'Gran Enano'
Musa acuminata 'Sumatrana' Musa basjoo
Musa paradisa 'Variegata' Musa spp.
Musa velutina Musa velutina 'Pink Velvet Banana'
Muscari armeniacum Muscari armeniacum 'Blue Spike'
Muscari azuream 'Album' Muscari botryoides 'Album'
Muscari latifolium Muscari neglectum
Mussaenda frondosa