| Milk Thistle |
Silybum marianum |
 |
| Milk Vetch (many) |
Oxytropis |
|
| Milk Vetch |
Oxytropis |
 |
| Milkvetch (many) |
Astragalus |
|
| Milkvetch |
Astragalus coccineus |
 |
| Milky Bellflower |
Campanula lactiflora |
 |
| Mimosa (many) |
Acacia |
|
| Mimosa |
Acacia dealbata |
|
| Mimosa |
Mimosa uruguensis |
 |
| Mini Angel's Trumpet |
Acnistus australis |
|
| Missouri Evening Primrose |
Oenothera missouriensis |
|
| Mistmaiden |
Romanzoffia |
|
| Mock Orange |
Murraya exotica |
|
| Moltkia |
Lithospermum x intermedia |
|
| Monkey Flower (many) |
Mimulus |
|
| Monkey Flower |
Mimulus hybrids |
 |
| Monkshood |
Aconitum vulparia |
|
| Montbretia |
Crocosmia masoniorum |
|
| Moringo |
Moringo oleifolia |
|
| Morning Glory |
Convolvulus tricolor |
|
| Morning Glory (many) |
Ipomoea |
|
| Morning Glory |
Ipomoea sloteri |
|
| Morning Glory |
Ipomoea violacea |
|
| Morning Iris |
Orthrosanthus laxus |
|
| Moroccan Toadflax |
Linaria maroccana |
|
| Moss Campion |
Silene acaulis |
|
| Moss Campion |
Silene schafta |
|
| Mother-in-law's Tongue |
Sanseviera |
|
| Mountain Avens |
Dryas octopetala |
|
| Mountain Date Palm |
Phoenix loureirii (humilis) |
|
| Mountain Lacebark |
Hoheria lyallii |
|
| Mountain Pawpaw |
Carica candamariensis |
|
| Mountain Tobacco |
Arnica montana |
|
| Mount Atlas Daisy |
Anacyclus depressus |
|
| Mullein (many) |
Verbascum |
|
| Mullein |
Verbascum thapsus |
|
| Musk Mallow |
Malva moschata (alba) |
|
| Mutisia (many) |
Mutisia |
|
| Mutisia |
Mutisia latifolia |
|
| Myrtle |
Myrica gale |
|
