Pink Manjack 
Pink trumpet vine 
Pink Turtlehead 
Plantago amplexicaulis 
Plantago bellardi 
Plantago cylindrica 
Plantago lagopus 
Plantago sarcophylla 
Plantago sinaica 
Plectranthus amboinicus 
Pleocaulus ritchiei 
Polka Dot Plant 
Princess Tree 
Procumbent Vervain 
Pseuderanthemum bicolor 
Pseuderanthemum carruthersii 
Pulchranthus adenostachyus 
Puriri 
Purple Beautyberry 
Purple Chinese houses 
Purple Eyebright 
Purple False Foxglove 
Purple foxglove 
Purple Justicia