Rosilla Rosinweed: perfoliatum
'Rotstrahlbusch' Switch Grass 'Rotundiloba' Sweetgum
Rough Bluegrass Rough Horsetail
Rough Seeded California Poppy Rough-Leaved Goldenrod 'Fireworks'
Rough-Stalk Bluegrass Roughstem Goldenrod 'Fireworks'
Round Head Bush Clover Round Lobed Hepatica
Roundleaf Buffaloberry Roundleaf Greenbrier
Royal Agave 'Royal Dwarf' Sheep Laurel
Royal Fern (spp.) Royal Palm
Royal Palm: spp. Rubber Plant, Baby (spp.)
Rubber Plant, Baby Variegated 'Rubra' Cut-leaf Anemone
'Rubra' Fringecup 'Rubra' Pussytoes
'Rubra' Windflower 'Ruby Spice' Summer Sweet
'Ruby Star' Purple Coneflower 'Ruby Teardrops' Colorado Spruce
'Ruby Veil' Rock Geranium Rue Anemone (spp.)
Rue Anemone, False Ruellia, Sonoran Desert
Ruellia, Violet 'Ruffles' Alumroot: micrantha
Running Strawberry Bush Rush Milkweed
Rush, Needle Spike Rush, Scouring
Rush, Slender Spike 'Russell Hybrid' Lupine
Russet Buffaloberry 'Russet' Southern Magnolia
Rusty Black Viburnum (spp.) Rusty Black Viburnum 'Emerald Charmô'
Rusty Blackhaw (spp.) Rusty Blackhaw 'Emerald Charmô'
Rusty Woodsia Fern Rye, Giant Wild (spp.)
Rye, Giant Wild 'Canyon Prince' Sachuista
Sacred Lotus (spp.) Sacred Lotus 'Red Radiance'
Saffron Buckwheat Sage, Autumn (spp.)
Sage, Autumn 'Moonlight' Sage, Autumn 'Purple'
Sage, Autumn 'Raspberry Ripple' Sage, Autumn 'Red'
Sage, Bicolor Sage, Blue
Sage, Chaparral Sage, Cherry Red (spp.)
Sage, Cherry Red 'Lady in Red' Sage, Gentian 'Cambridge Blue'
Sage, Hummingbird (spp.) Sage, Hummingbird 'Lady in Red'
Sage, Louisiana (spp.) Sage, Louisiana 'Silver Queen'
Sage, Lyre-Leaf 'Burgundy Bliss' Sage, Lyre-Leaf 'Purple Knockout'
Sage, Mealy Blue (spp.) Sage, Mealy Blue 'Argent'
Sage, Mealy Blue 'Strata' Sage, Mealy Blue 'Victoria Blue'
Sage, Mealycup (spp.) Sage, Mealycup 'Argent'
Sage, Mealycup 'Strata' Sage, Mealycup 'Victoria Blue'
Sage, Mexican Bush (spp.) Sage, Pineapple
Sage, Pineapple-scented Sage, Pitcher
Sage, Prairie (spp.) Sage, Prairie 'Silver Queen'
Sage, Purple (spp.) Sage, Roseleaf (spp.)
Sage, San Miguel Mountain Sage, Sandhill (spp.)
Sage, Sandhill 'David's Choice' Sage, Scarlet (spp.)
Sage, Scarlet 'Lady in Red' Sage, Tarantula (spp.)
Sage, Texas (spp.) Sage: apiana, White
Sage: candidum Sage: coccinea, Texas (spp.)
Sage: coccinea, Texas 'Lady in Red' Sage: greggii, Texas (spp.)
Sage: greggii, Texas 'Moonlight' Sage: greggii, Texas 'Purple'
Sage: greggii, Texas 'Raspberry Ripple' Sage: greggii, Texas 'Red'
Sage: leucantha, Purple (spp.) Sage: ludoviciana, White (spp.)
Sage: ludoviciana, White 'Silver Queen' Sage: pruinosa
Sage: zygophyllum Sagebrush, Beach (spp.)
Sagebrush, Beach 'David's Choice' Sagebrush, California (spp.)
Sagebrush, Coastal (spp.) Sagebrush, Great Basin
Sagebrush, Trailing (spp.)