Rosea Yarrow
Rosemary
Royal Beard Tongue
Royal Purple Smokebush
Royal Trumpet Vine, River's Trumpet
Rozanne Cranesbil
Ruby Flower Red Horsechestnut
Ruby Glow Manuka
Rusty Sedge
Sage
Sageleaf Rockrose
Sago-Palm
San Antonio Sage
Sandankwa Viburnum
Sandhill Sage, Coast Sagebrush
Sansanqua or Sun Camellia
Santa Ana Cardinal Coral Bells
Santa Barbara Daisy
Santa Barbara Daisy, Mexican Daisy
Santa Cruz Island Buckwheat