Red Hot Poker
Red Hot Poker, Thompson
Red Yucca
Redbud, Chinese 'Avondale'
Redbud, Eastern
Redbud, Eastern 'Oklahoma'
Redbud, Oklahoma
Redbud, Western
Redvein Enkianthus
Redwood Sorrel, Oregon Oxalis
Redwood, Coast 'Aptos Blue'
Redwood, Coast 'Soquel'
Redwood, Coast 'Woodside Blue'
Redwood, Coast Redwood
Redwood, Sierra / Big Tree
Reed Grass, Karl Foerster Feather
Reed Grass, Mendocino
Rhododendron, 'Anah Kruschke'
Rhododendron, 'Blue Diamond'
Rhododendron, 'Gomer Waterer'