Roble Beech Roble Guayo
Robust Acacia 'Robusta' Early Forsythia
'Robusta Green' Chinese Juniper Rock Grevillea
Rock Maple (spp.) Rock Maple 'Ann Rutledge'
Rock Maple 'Arrowhead' Rock Maple 'Celebration'
Rock Maple 'Coleman' Rock Maple 'Commemoration'
Rock Maple 'Eagle Claw' Rock Maple 'Endowment'
Rock Maple 'Fairview' Rock Maple 'Globosum'
Rock Maple 'Goldspire' Rock Maple 'Legacy'
Rock Maple 'Newton Sentry' Rock Maple 'Seneca Chief'
Rock Maple 'Skybound' Rock Maple 'Sweet Shadow'
Rock Maple 'Temple's Upright' Rock Palm (spp.)
Rock Palm 'Elegans' Rock Rose
Rock Rose (spp.) Rock Rose 'Buttercup'
Rock Rose 'Cerise Queen' Rock Rose 'Goldie Lock'
Rock Rose, Grampians Rock Rose, Gum
Rock Rose, Hybrid (spp.) Rock Rose, Hybrid 'Grayswood Pink'
Rock Rose, Orchid Rock Rose, Sage Leaf (spp.)
Rock Rose, Sage Leaf 'Prostratus' Rock Rose, Sidney
Rock Rose, Spotted Rock Rose, White
Rock Rose, Wooly Rock Rose: Helianthemum 'Razzle Dazzle'
Rock Rose: nummularium obscurum Rock Spiraea
'Rockanje' White Willow Rockberry
'Rockery Gem' Chinese Juniper Rocket Pincushion (spp.)
Rocket Pincushion 'Shooting Rocket' Rockingham Podocarp
Rockrose Rockspray Cotoneaster (spp.)
Rockspray 'Emerald Spray' Rocky Mountain Fir 'Compacta'
Rocky Mountain Juniper (spp.) Rocky Mountain Juniper 'Chandler's Blue'
Rocky Mountain Juniper 'Gray Gleam' Rocky Mountain Juniper 'Holmes Silver'
Rocky Mountain Juniper 'Horizontalis' Rocky Mountain Juniper 'Medora'
Rocky Mountain Juniper 'Minima' Rocky Mountain Juniper 'Moonglow'
Rocky Mountain Juniper 'Moonlight' Rocky Mountain Juniper 'Pathfinder'
Rocky Mountain Juniper 'Platinum' Rocky Mountain Juniper 'Rependens'
Rocky Mountain Juniper 'Repens' Rocky Mountain Juniper 'Silver King'
Rocky Mountain Juniper 'Skyrocket' Rocky Mountain Juniper 'Tolleson's Green Weeping'
Rocky Mountain Juniper Weeping Rocky Mountain Juniper 'Wichita Blue'
Rocky Mountain Maple Rocky Mountain Pinyon
Rocky Mountain Pinyon Pine Rocky Mountain Scrub Oak
Rocky Mountain White Oak Rocky Mountain White Pine (spp.)
Rocky Mountain White Pine Blue 'Rodeo Lagoon' Buck Brush
'Rodeo Lagoon' Ceanothus 'Rodeo Lagoon' Redroot
Roman Candle (spp.) Roman Candle Variegated
Roman Cassie 'Romance' Common Lilac
Rondeletia Rootspine Palm
'Rosa Plea' Dwarf Flowering Almond