M
- MADAGASCAR JASMINE
- MADAGASCAR PALM
- MADAGASCAR PERIWINKLE
- MAGNOLIA
- MAHONIA
- MAIANTHEMUM
- MAIDENHAIR FERN
- MAIDENHAIR TREE
- MALLOW
- MANGO
- MAPLE
- MARANTA
- MARGUERITE, PARIS DAISY
- MARIGOLD
- MARLBERRY
- MARSH MARIGOLD
- MASTERWORT
- MAY APPLE
- MAZUS REPTANS
- MEADOW RUE
- MEADOW SAFFRON, AUTUMN CROCUS
- MECARDONIA
- MEDITERRANEAN FAN PALM
- MELAMPODIUM
- MELON
- MERRYBELLS, BELLWORT
- MESQUITE, HONEY MESQUITE
- MEXICAN BUCKEYE
- MEXICAN FEATHER GRASS, TEXAS NEEDLE GRASS
- MEXICAN FLAME VINE
- MEXICAN ORANGE
- MEXICAN SUNFLOWER
- MIMOSA
- MINT
- MOCK ORANGE
- MONARDA
- MONEY PLANT, HONESTY
- MONKEY FLOWER
- MONKEY GRASS, LILY TURF
- MONSTERA
- MOOR GRASS
- MORELLA
- MORNING GLORY
- MOTH ORCHID
- MOUNTAIN ASH
- MOUNTAIN MINT
- MUHLY GRASS
- MULBERRY
- MULLEIN
- MUSTARD
- MYRTLE