'Bert' Air Pine 'Bert' Bromeliad
'Bert' Living Vase 'Bertie Ferris' Daylily
'Bertram Anderson' Long Leafed Lungwort 'Bertrand Farr' Daylily
Beschorneria 'Bethany' Florist's Chrysanthemum
Bethlehem Sage (spp.) Bethlehem Sage 'Lewis Palmer'
Bethlehem Sage: hybrid 'Cotton Cool' Bethlehem Sage: hybrid 'Dark Vader'
Bethlehem Sage: hybrid 'Emerald Isles' Bethlehem Sage: hybrid 'High Contrast'
Bethlehem Sage: hybrid 'Majesty' Bethlehem Sage: hybrid 'May Bouquet'
Bethlehem Sage: hybrid 'Opal' Bethlehem Sage: hybrid 'Raspberry Ice'
Bethlehem Sage: hybrid 'Raspberry Splash' Bethlehem Sage: hybrid 'Silver Streamers'
Bethlehem Sage: hybrid 'Trevi Fountain' Bethlehem Sage: hybrid 'Victorian Brooch'
Betony, Common 'Hummelo' Betony, Marsh
Betony, Purple (spp.) Betony, Purple 'Grandiflora'
Betony, Wood (spp.) Betony, Wood 'Grandiflora'
'Better Believe It' Daylily 'Betty Woods' Daylily
'Betulia Red' Winter Flowering Begonia 'Beverly Sills' Tall Bearded German Iris
'Bi-color' Garden Monk's Hood Bicolor Monkshood (spp.)
Bicolor Sage Bidi-Bidi (spp.)
Big Bend Yucca (spp.) Big Betony 'Robusta'
'Big Blue' Lilyturf Big Blue Lobelia (spp.)
Big Blue Lobelia 'Blue Selection' Big Bluestem
'Big Daddy' Hosta 'Big Ears' Lamb's Ears
Big Fruit Evening Primrose (spp.) Big Fruit Evening Primrose 'Silver Wings'
Big Leaf Lupine (spp.) Big Leaf Lupine 'My Castle'
Big Leaf Lupine 'Popsicle' Big Leaf Lupine 'Russell Hybrid'
Big Leaf Lupine 'The Governor' Big Marigold (spp.)
Big Marigold 'Cortee Yellow' Big Marigold 'French Vanilla'
Big Marigold 'Inca II' Big Marigold 'Snowdrift'
Big Periwinkle (spp.) Big Periwinkle 'Even Steven'
Big Periwinkle 'Gold Vein' Big Periwinkle Variegated
'Big Red' Joseph's Coat: ficoidea 'Big Smile' Common Sunflower
Bigblue Liriope (spp.) Bigblue Liriope 'Big Blue'
Bigblue Liriope 'Ever Green Giant' Bigblue Liriope 'Gold Band'
Bigblue Liriope 'John Burch' Bigblue Liriope 'Monroe White'
Bigblue Liriope 'Riegel's Big Blue' Bigblue Liriope 'Royal Purple'
Bigblue Liriope Variegated Bigelow Mimulus
Bigelow Nolina Bigflower Self Heal (spp.)
Bigflower Self Heal 'Loveliness' Big-horned Euphorbia
Bigleaf Goldenray (spp.) Bigleaf Goldenray 'Desdemona'
Bigleaf Goldenray 'Othello' Bigleaf Periwinkle (spp.)
Bigleaf Periwinkle 'Even Steven' Bigleaf Periwinkle 'Gold Vein'
Bigleaf Periwinkle Variegated Bigroot Geranium (spp.)
Bigroot Geranium 'Ingwersen's Variety' Bigroot Geranium 'Walter Inquersen'
'Bikini' Winged Everlasting 'Bill Baker Form' Solomon's Seal
'Bill Baker' Thick Leaf Phlox Bindweed
'Bingo Blue Frost' Pansy 'Biokovo' Cambridge Geranium
'Biokovo Karmina' Cambridge Geranium