Rock Penstemon
Rock Slide Dicliptera
Rocky Mountain Penstemon
Rocky Point Ice Plant
Rose Of Sharon, Shrub Althaea
Rosemary
Rosemary Collingwood Ingram
Rosemary Huntington Carpet
Rosemary Tuscan Blue
Rough Daisy Devil's River
Rough-Leafed Agave
Royal Beard Tongue, Showy Penstemon
Ruby Glow Sedum
Russian Olive, Oleaster
Sacahuista, The Devil's Shoestring
Sage Texas Violet
Sahuiliqui
Saltillo Evening Primrose
San Diego Red Bougainvillea
San Marcos Hibiscus