North American Natives: Skun - Sole (100)
Skunk Cabbage
Skunk Cabbage: foetidus
Skunkbush
Sky Flower 'Golden Edge'
Sky Flower 'Sapphire Showers'
Sky Flower Variegated
'Skybound' Sugar Maple
'Skylark' Blueblossom
'Skylark' Holly Grape
'Skylark' Oregon Grape
'Skyline' Thornless Honey Locust
'Skyrocket' Colorado Red Cedar
'Skyrocket' Rockcress
Slash Pine
Slash Pine: elliottii
'Sleigh Bells' American Holly
Slender Blue Flag
'Slender Silhouette' Sweetgum
Slender Spike Rush
'Slim Jane' American Holly
Small leaf Mahogany
Small Leaf Viburnum
Small Woodland Sunflower
Small-Flowered Century Plant
Small-seeded Beargrass
Smartweed: virginianum (spp.)
Smartweed: virginianum 'Compton's Form'
Smartweed: virginianum 'Lance Corporal'
Smartweed: virginianum Variegated
Smoke Tree, American
Smooth Aster (spp.)
Smooth Azalea
Smooth Blackhaw
Smooth Hydrangea (spp.)
Smooth Hydrangea: arborescens (spp.)
Smooth Hydrangea: arborescens 'Annabelle'
Smooth Hydrangea: arborescens 'Grandiflora'
Smooth Hydrangea: arborescens 'Incrediball®'
Smooth Hydrangea: arborescens 'Invincibelle® Spirit'
Smooth Hydrangea: arborescens 'White Dome®'
Smooth Phlox 'Anita Kistler'
Smooth Serviceberry (spp.)
Smooth Serviceberry 'Lancifolia'
Smooth Sumac
Smooth Witherod (spp.)
Smooth Witherod 'Brandywine™'
Smooth Witherod 'Winterthur'
Snakeberry
Snakeroot, White (spp.)
Snakeroot, White 'Chocolate Snakeroot'
Snakewood, Bitter
Snapdragon, Climbing 'Jewels'
Snapdragon, Creeping 'Jewels'
Snapdragon, Island Bush
Snapdragon, Summer 'AngelMist™ Purple Stripe'
Snapdragon, Trailing 'Jewels'
Snapdragon, Twining 'Jewels'
Sneezeweed (spp.)
Sneezeweed, Common (spp.)
Sneezeweed, Orange
'Snow Cushion' Bushy Aster
Snow on the Mountain: marginata
'Snow Queen' Oakleaf Hydrangea
Snow Shrimp Plant
Snow Trillium
Snowball Cactus
'Snowball' Monterey Ceanothus
Snowball, Wild
'Snowbank' False Chamomile: asteroides
Snowberry, West Indian
Snowberry: microphyllus
'Snowdrift' American Marigold
'Snowdrift' Fringed Bleeding Heart
Snowdrop Tree
'Snowflake' False Chamomile: asteroides
'Snowflake' Moss Phlox
'Snowflake' Oakleaf Hydrangea
Snowflake, Water
Snowhill Hydrangea (spp.)
Snowhill Hydrangea 'Annabelle'
Snowhill Hydrangea 'Grandiflora'
Snowhill Hydrangea 'Incrediball®'
Snowhill Hydrangea 'Invincibelle® Spirit'
Snowhill Hydrangea 'White Dome®'
Soap Tree Yucca
Soapberry, Florida
Soapberry, Western
Soapberry, Wingleaf
Soapweed Yucca
Soapweed Yucca: glauca
Soft Maple (spp.)
Soft Maple 'Beebe'
Soft Maple 'Pyramidale'
Soft Maple 'Silver Queen'
Soft Maple 'Skinneri'
Soft Maple 'Wieri'
Soft Tip Yucca
Soldierwood
Soledad Pine
'Soleil d'Or' Ten Petaled Sunflower