Polygonum palaestinum 
Polygonum setosum 
potulaca 
Powder Puff Pincushion 
Prickly Pear Cactus 
Prickly russian thistle 
Prickly saltwort 
Psylliostachys spicata 
Psylliostachys suworowii 
Pteropyrum scoparium 
Ptilotus manglesii 
Punarnava 
Pupalia lappacea 
Purple Dewplant 
Purple Spurrey 
Pussy Tails 
Quail Grass 
Queen of the Night 
Queen-of-the-Night 
Ragged Robin 
Rainbow Pink 
Rattail Cactus flower 
Reaumuria hirtella 
Red Campion