'Mrs. A.H. Austin' Daylily 'Mrs. Frank Beach' Common Garden Peony
'Mrs. GH Pring' Waterlily 'Mrs. Giuseppi' Houseleek
'Mrs. Kendall Clark' Meadow Cranesbill 'Mrs. Loewer' Ohio Spiderwort
Mrs. Loewer's Spiderwort 'Mrs. Loewer' 'Mrs. N. Thompson' Hybrid Clematis
Mt. Atlas Daisy Mt. Atlas Daisy: pyrethrum
'Mt. Fuji' Summer Phlox 'Mt. St. Helens' Alumroot: Heuchera
Muatucana, Orange Mugwort 'Powis Castle'
Mugwort, Western (spp.) Mugwort, White (spp.)
Mugwort, White 'Guizhou' Mugwort: austriaca
Mugwort: ludoviciana, Western (spp.) Mugwort: ludoviciana, Western 'Silver Queen'
Mugwort: schmidtiana (spp.) Mugwort: schmidtiana 'Silver Mound'
Mugwort: vulgaris (spp.) Mugwort: vulgaris 'Oriental Limelight'
Mullein Pink (spp.) Mullein Pink 'Dancing Ladies'
Mullein Pink 'Gardener's World' Mullein 'Raspberry Ripple'
Mullein 'Summer Sorbet' Mullein, Chaix (spp.)
Mullein, Chaix White Mullein, Common
Mullein, Nettle Leaved (spp.) Mullein, Nettle Leaved White
Mullein, Silver (spp.) Mullein, Silver 'Arctic Summer'
'Multi Blue' Hybrid Clematis 'Multiplex' Bloodroot