Bulrush, Dwarf Bulrush, Least
'Bumalda' Astilbe Bunchberry
Bunchberry Dogwood Bunchberry, Canadian
Bunchleaf Penstemon 'Blue Bedder' Bunchleaf Penstemon 'Electric Blue'
Bunchleaf Penstemon 'Margarita BOP' Bunchleaf Penstemon 'Platina White'
'Bunny Blue™' Spreading Sedge Bunny Ears
Bur Marigold 'Golden Eye' Bur Marigold 'Golden Goddess'
Bur Marigold 'Marietta Gold Spark' Bur Marigold 'Summerlovers Biden 1850'
Bur Reed 'Burfordiense' Black-Lipped Orchid
'Burgundy' Blanket Flower: grandiflorahybrid 'Burgundy Bliss' Cancer Weed
'Burgundy Glow' Carpet Bugle 'Burgundy' Okra
Burnet, Garden Burnet, Japanese (spp.)
Burnet, Japanese 'Lemon Splash' Burnet, Salad
Burningbush Burridge Green Thread 'Philippine'
Burro's Tail Bursage, Triangle Leaf
'Busaro' Savoy Cabbage Bush Clover 'Homolosa'
Bush Clover, Pink (spp.) Bush Clover, Pink 'Gilbraltar'
Bush Clover, Round Head Bush Clover, Thunberg (spp.)
Bush Clover, Thunberg 'Gilbraltar' Bush Germander
Bush Monkey Flower Bush Morning Glory
'Bush Sunlight' Garden Petunia Bush Violet 'Blue Troll'
Bush Violet 'Major' Bush, Devil In The
Bush, Mint Bush: purpurea, Indigo
Bushy Aster 'Bonny Blue' Bushy Aster 'Lady in Blue'
Bushy Aster 'Persian Rose' Bushy Aster 'Peter Harrison'
Bushy Aster 'Rose Serenade' Bushy Aster 'Sapphire'
Bushy Aster 'Snow Cushion' Bushy Aster 'Snow Flurry'
Bushy Aster 'Winston Churchill' Bushy Aster 'Wood's Light Blue'
Bushy Aster 'Wood's Pink' Bushy Blue Skullcap
Bushy St.Johnswort Busy Lizzie (spp.)
Busy Lizzie 'Blackberry Ice' Busy Lizzie 'Blitz 2000 Red'
Busy Lizzie 'Candy® Coral Bee' Busy Lizzie 'Candy® Deep Salmon'
Busy Lizzie 'Candy® Mix' Busy Lizzie 'Candy® Rose Star'
Busy Lizzie 'Rose Parade' Busy Lizzie 'Rosette'
Busy Lizzie 'Show Stopper' Busy Lizzie 'Stardust Salmon'
Busy Lizzie 'Super Elfin Orange' Busy Lizzie 'Super Elfin Swirl'
Busy Lizzie 'Victorian Rose' Butcher's Broom 'Lanceolatus'
'Butter and Sugar' Siberian Iris Buttercup Flower (spp.)
Buttercup, Creeping (spp.) Buttercup, Creeping 'Buttered Popcorn'
Buttercup, Creeping 'Pleniflorus' Buttercup, Fig 'Brazen Hussy'
Buttercup, Persian (spp.) Buttercup, Persian 'Bloomingdales Pink Shades'
Buttercup, Prairie Double-flowered (spp.) Buttercup, Prairie Double-flowered 'Buttered Popcorn'
Buttercup, Prairie Double-flowered 'Pleniflorus' Buttercup, Turban (spp.)
Buttercup, Turban 'Bloomingdales Pink Shades' Buttercup, Water (spp.)
Buttercup, Water 'Buttered Popcorn' Buttercup, Water 'Pleniflorus'
Buttercup: aquatilis, Water 'Buttered Popcorn' Creeping Buttercup
Butterfly Agave Butterfly Amaryllis
'Butterfly Blue' Pincushion Flower: columbaria Butterfly Flower
Butterfly Flower 'Floraboard' Butterfly Flower: wisetonensishybrid
Butterfly Ginger Butterfly Ginger: coronarium
Butterfly Iris Butterfly Lily
Butterfly Milkweed (spp.) Butterfly Milkweed 'Gay Butterflies'
Butterfly Milkweed 'Hello Yellow' Butterfly Orchid (spp.)
Butterfly Orchid 'Blandans Kaleidoscope' Butterfly Orchid 'Mendenhall'
Butterfly Orchid 'Paula Lawrence' Butterfly Orchid 'York'
Butterfly Pea Butterfly Vervain
Butterfly Weed (spp.) Butterfly Weed 'Red Butterfly'
Butterfly Weed 'Silky Gold' Butterfly Weed, Swamp (spp.)
Butterfly Weed, Swamp 'Ice Ballet' Butterfly Weed: tuberosa (spp.)
Butterfly Weed: tuberosa 'Gay Butterflies' Butterfly Weed: tuberosa 'Hello Yellow'
Butterprint (spp.) Button Eryngo
Button Snake Root Button Snakeroot (spp.)
Button Snakeroot 'Floristan Violet' Button Snakeroot 'Kobold'
Button Snakeroot White Button, Bachelor's (spp.)
Button, Bachelor's 'Gnome Pink' Buttonweed (spp.)