Molinia caerulea 'Edith Dudszus' Molinia caerulea 'Variegata'
Molinia caerulea ssp. arundinacea 'Skyracer' Mollugo verticillata
Moluccella laevis Momordica charantia
Momordica charantia 'Spindle' Monarda 'Colrain Red'
Monarda 'Donnerwolke' Monarda 'Petite Wonder'
Monarda 'Raspberry Wine' Monarda citriodora
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 Morinda citrifolia
Morus alba Morus alba 'Chaparral'
Morus alba 'Paper Dolls' Morus alba 'Pendula'
Morus alba var. tartarica Morus australis
Morus nigra Morus rubra
Muehlenbeckia complexa Murraya koenigii
Murraya paniculata 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 erythrophylla Mussaenda frondosa
Mussaenda philippica Myoporum laetum
Myoporum pacifica Myoporum parvifolium
Myosotis alpestris Myosotis scorpioides
Myosotis scorpioides 'Alba' Myosotis scorpioides 'Maytime'
Myosotis scorpioides 'Pink' Myosotis sylvatica
Myosotis sylvatica 'Alba' Myosotis sylvatica 'Bobo Blue'
Myosotis sylvatica 'Early Bird Blue' Myosotis sylvatica 'Indigo Compacta'
Myosotis sylvatica 'Rosylva' Myosotis sylvatica 'Victoria Blue'
Myrceugenia ovata var. nannophylla Myrcianthes fragrans
Myrciaria cauliflora Myrica californica
Myrica cerifera Myrica faya
Myrica pensylvanica Myriophyllum aquaticum
Myrsine guianensis Myrtillocactus geometrizans
Myrtus communis Myrtus communis 'Boetica'
Myrtus communis 'Compacta' Myrtus communis 'Compacta Variegata'
Myrtus communis 'Microphylla' Myrtus communis 'Variegata'
Nageia nagi