Pachysandra
Pacific Silverweed
Pacific Swampfire
Pagoda-plant
Painted Tongue
Painted Trillium
Pale Beardtongue
Pale Dock
Pale False Mannagrass
Pale Madwort
Pale Purple Coneflower
Pale Sedge
Pale St. Johnswort
Pale Touch-me-not
Palegreen Orchid
Paleleaf Woodland Sunflower
Palespike Lobelia
Paleyellow Iris
Panicgrass
Panicled Bulrush
Panicled Hydrangea
Panicledleaf Ticktrefoil
Paper Birch
Paper Mulberry
Parachute Sedge
Paradise Apple
Paradise Plant
Parasol Sedge
Parasol Whitetop
Parlin's Dewberry
Parlin's Pussytoes
Parrot Feather Watermilfoil
Parsley
Parsnip
Partridge Pea
Partridgeberry
Pasture Hawksbeard
Pasture Spikesedge
Pasture Thistle
Patience Dock
Paulownia
Pawpaw
Pea
Peach