Pennisetum advena 
Pennsylvania sedge 
Perennial Ryegrass 
Perennial Ryegrass 
Perotis patens 
Phragmites americanus 
Phyllostachys bambusoides 
Phyllostachys vivax 
Pine Barren Flatsedge 
Pineapple 
Pink quill 
Pink Quill 
Piptatherum miliaceum 
Piripiri 
Pointed broom sedge 
Porcupine Grass 
Purple False Brome 
Purple Lovegrass 
Purple Moor Grass 
Purple Pampas Grass 
Purple Plume-Grass 
Purpletop Tridens 
Puya berteroniana 
Puya chilensis