Lungwort (spp.) Lungwort 'Lewis Palmer'
Lungwort, Blue (spp.) Lungwort, Cowslip (spp.)
Lungwort, Long Leafed 'Bertram Anderson' Lungwort, Long Leafed 'Cevennensis'
Lungwort, Long Leafed 'Diana Clare' Lungwort, Long Leafed 'Excalibur'
Lungwort: hybrid 'Cotton Cool' Lungwort: hybrid 'Dark Vader'
Lungwort: hybrid 'Emerald Isles' Lungwort: hybrid 'High Contrast'
Lungwort: hybrid 'Majesty' Lungwort: hybrid 'May Bouquet'
Lungwort: hybrid 'Opal' Lungwort: hybrid 'Raspberry Ice'
Lungwort: hybrid 'Raspberry Splash' Lungwort: hybrid 'Silver Streamers'
Lungwort: hybrid 'Trevi Fountain' Lungwort: hybrid 'Victorian Brooch'
Lungwort: montana 'David Ward' Lungwort: officinalis 'Sissinghurst White'
Lupine (spp.) Lupine 'My Castle'
Lupine 'Popsicle' Lupine 'Russell Hybrid'
Lupine 'The Governor' Lupine, Arroyo
Lupine, Big Leaf (spp.) Lupine, Big Leaf 'My Castle'
Lupine, Big Leaf 'Popsicle' Lupine, Big Leaf 'Russell Hybrid'
Lupine, Big Leaf 'The Governor' Lupine, Carolina
Lupine, Hollowleaf Annual Lupine, Succulent
Lupine: fistulosa 'Lutea' Crown Imperial Fritillary
Lychnis 'Jenny' Lychnis 'Nana Peggy'
Lycoris, Autumn Lycoris, Short tube
Lyme Grass 'Manhattan' Lyme Grass (spp.)
Lyme Grass Blue Lyre-Leaf Sage 'Burgundy Bliss'
Lyre-Leaf Sage 'Purple Knockout' Lysimachia 'Ecosatin'
Mace Sedge 'Macintosh' Daylily
Madagascar Periwinkle (spp.) Madagascar Periwinkle 'First Kiss Blueberry'
Madagascar Periwinkle 'Parasol' Madagascar Periwinkle 'Pastels Mix'
Madagascar Periwinkle 'Pretty in Rose' Madagascar Periwinkle 'Raspberry Cooler'
Madagascar Periwinkle 'Rose Carpet' Madagascar Periwinkle 'Stardust Mix'
Madagascar Periwinkle 'Stardust Orchid' Madeira Island Geranium
'Magellan Coral' Common Zinnia 'Maggie Belle Slocum' Sacred Lotus
'Magic Burgundy' Scarlet Sage: splendens 'Magic Carpet' Wild Thyme
'Magic Fountain Lavender' Delphinium: cultorumhybrid 'Magic Fountain White' Delphinium: cultorumhybrid
'Magic Fountains' English Larkspur Magic Lily: squamigera
'Magic Wand' Alumroot: Heuchera 'Magilla' Beefsteak Plant
Magnolia Waterlily 'Poestlingberg' 'Magnus' Purple Coneflower
Magpie Gladiolus 'Mahogany Midget' Annual Coreopsis
Maiden Grass 'Silverbell' Maiden Grass (spp.)
Maiden Grass 'Adagio' Maiden Grass 'Autumn Light'
Maiden Grass 'Cabaret' Maiden Grass 'Cosmopolitan'
Maiden Grass 'Ferner Olsten' Maiden Grass 'Gracillimus'
Maiden Grass 'Graziella' Maiden Grass 'Huron Sunrise'
Maiden Grass 'Little Dot' Maiden Grass 'Malepartus'
Maiden Grass 'Morning Light' Maiden Grass 'Nippon'
Maiden Grass 'Purpurascens' Maiden Grass 'Sarabande'
Maiden Grass 'Silberfeder' Maiden Grass 'Strictus'
Maiden Grass Variegated Maiden Grass 'Yaku Jima'
Maiden Grass 'Zebrinus' Maiden Pink (spp.)
Maiden Pink 'Arctic Fire' Maiden Pink 'Brilliant'
Maiden Pink 'Zing Rose'