'Micawpy' Coleus Michaelmas Aster (spp.)
Michaelmas Aster 'Frolic' Michaelmas Aster 'Henry III'
Michaelmas Aster 'Marie III' Michaelmas Aster 'Patricia Ballard'
Michaelmas Aster 'Peter III' Michaelmas Aster 'Shout'
Michaelmas Aster 'Twist' Michaux's Lily
Middendorf Daylily 'Middleton Gem' Bearded Tongue: Penstemon
'Midnight' Black Ginger 'Midnight Claret' Alumroot: Heuchera
'Midnight Moonlight' Gladiolus 'Midnight Reiter' Meadow Cranesbill
'Miffy Brute' Hybrid Speedwell Mignonette, Common
Mignonette, Garden 'Milan' Daffodil
'Mildred Seaver' Hosta Milfoil (spp.)
Milfoil 'Apple Blossom' Milfoil 'Cerise Queen'
Milfoil 'Fire King' Milfoil 'Great Expectations'
Milfoil 'Heidi' Milfoil 'Moonshine'
Milfoil 'Paprika' Milfoil 'Pink Deb'
Milfoil 'Red Beauty' Milfoil 'Snowsport'
Milfoil 'Summer Pastels' Milfoil 'Summerwine'
Milfoil 'Terra Cotta' Milfoil 'Weser River Sandstone'
Milfoil 'White Beauty' Milfoil: Achillea 'Pomegranate'
Milfoil: Achillea 'Sunny Seduction' Milfoil: aquaticum
Milfoil: tomentosa (spp.) Milk Barrel Spurge
Milk Barrel, African Milk Barrel: horrida, African
Milk Purslane Milk Thistle
Milk Vetch Milk Vetch: balearicus
Milkweed, Butterfly (spp.) Milkweed, Butterfly 'Gay Butterflies'
Milkweed, Butterfly 'Hello Yellow' Milkweed, Common
Milkweed, Desert Milkweed, Green Flowered
Milkweed, Marsh (spp.) Milkweed, Marsh 'Ice Ballet'
Milkweed, Rush Milkweed, Spider
Milkweed, Swamp (spp.) Milkweed, Swamp 'Ice Ballet'
Milkweed, Trailing Milkweed, Tropical (spp.)
Milkweed, Tropical 'Red Butterfly' Milkweed, Tropical 'Silky Gold'
Milky Bellflower (spp.) Millet 'Purple Majesty'
Millet, Broomtail 'Purple Majesty' Millet, Purple 'Purple Majesty'
Millet, Red 'Purple Majesty' 'Million Bells®Cherry Pink' Trailing Petunia
'Millstream Daphne' Moss Phlox Mimicry Plant
Mimulus, Bigelow Mina Vine (spp.)
Mina Vine 'Citronella' 'Mina' Wood Fern
Mini Horsetail 'Mini Pearl' Daylily
'Mini Star' Summer Phlox 'Mini Star' Treasure Flower
Miniature Cattail Miniature Iris
Miniature Tree Fern Miniature Treefern
'Minima' Silver Nerve Plant 'Ministar' Columbine
'Minnautumn' Florist's Chrysanthemum 'Minnruby' Chrysanthemum
'Minor' Guzmania 'Minor' Wild Thyme