Berberis x stenophylla
Hedge Barberry
Bergenia crassifolia
Elephant-ears
Berula erecta
Lesser Water-parsnip
Beta vulgaris
Sea Beet
Betonica officinalis
Betony
Betula pendula
Silver Birch
Bidens cernua
Nodding Bur-marigold
Bidens pilosa
Spanish-needles
Bidens tripartita
Trifid Bur-marigold
Bignonia magnifica
Glowvine
Bistorta officinalis
Common Bistort
Bistorta vivipara
Alpine Bistort
Blackstonia perfoliata
Yellow-wort
Blitum bonus-henricus
Good-King-Henry
Blysmus compressus
Flat-sedge
Bolboschoenus maritimus
Sea Club-rush
Borago officinalis
Borage
Borago pygmaea
Slender Borage
Bougainvillea glabra
Brachyglottis x jubar
Shrub Ragwort
Brachypodium sylvaticum
False-brome
Brassica juncea
Chinese Mustard
Brassica napus
Oil-seed Rape
Brassica oleracea
Wild Cabbage