• (1) M Malína - Macadamier
• (2) Macadamier - Made in Heaven Daylily
• (3) Made To Order Daylily - Maguey Mezcalero
• (4) Maguey Mezortillo - Majestic Lilyturf
• (5) Majestic Maroon Daylily - Malaysian Thin-Walled Bamboo
• (6) Malaysian Vanilla - Mammillaria
• (7) Mammillaria - Mandua
• (8) Mandubi Do Porco - Mann's Cyrtandra
• (9) Mann's Cyrtandra - Mao Qie (Mao Ch´ieh)
• (10) Mao Qua - Marden Clover
• (11) Mardi Gras Alum Root Heuchera - Maritistel
• (12) Marizol Gold Tomato - Marsh's Dutchman's-Pipe
• (13) Marsh-Clover - Masicar n
• (14) Masicar¢n - Matkarse
• (15) Matkarse - May Moon Hosta
• (16) May Moonlight Daylily - Meadow Milk-Vetch
• (17) Meadow Milkvetch - Mei Gui Cao
• (18) Mei Gui Qie - Melon Serpent
• (19) Melon Shrub - Merle Kent Daylily
• (20) Merle Kent Memorial Daylily - Mexican Daisy
• (21) Mexican Devil - Mexikansk Esdragon
• (22) Mexikansk Hornhaj - Middelburg Giant Cycad (South Africa)
• (23) Middelhavsskælbrosme - Milkwood
• (24) Milkwood-Pine - Miniature Dwarf Bearded Iris
• (25) Miniature Dwarf Bearded Iris - Miniature Tall Bearded Iris
• (26) Miniature Tall Bearded Iris - Miss Jones Hawthorn
• (27) Miss Jones' Hawthorn - Moana Terence Daylily
• (28) Moana Twirler Daylily - Mokan Bouquet Daylily
• (29) Mokan Brownie Daylily - Monkey Thorn
• (30) Monkey´s-Comb - Moon-Carrot
• (31) Moonah - Moringa
• (32) Moringa - Moss Rose
• (33) Moss Rose - Mountain Balm
• (34) Mountain Banksia - Mountain Maple
• (35) Mountain Maple - Mourningbride
• (36) Mouron D´eau - Mucronate Sprangletop
• (37) Mucronatum Azalea - Muna
• (38) Munagaa - Muskus-Grass
• (39) Muskuscitroen - Myrtle Whortleberry
• (40) Myrtle-Flag - M¢tŠl