Bidens tripartita
Trifid Bur-marigold
Bistorta officinalis
Common Bistort
Blitum bonus-henricus
Good-King-Henry
Blysmus compressus
Flat-sedge
Bolboschoenus maritimus
Sea Club-rush
Borago officinalis
Borage
Borago pygmaea
Slender Borage
Bougainvillea glabra
Brachypodium sylvaticum
False-brome
Brassica napus
Oil-seed Rape
Bromopsis ramosa
Hairy-brome
Bryonia dioica
White Bryony
Butomus umbellatus
Flowering-rush
Buxus sempervirens
Box
Caesalpinia pulcherrima
Poinciana
Cakile maritima
Sea Rocket
Calamagrostis canescens
Purple Small-reed
Callindra houstoniana
Callistephus chinensis
China aster
Calluna vulgaris
Heather
Calotropis gigantea
Giant Calotrope
Caltha palustris
Marsh-marigold
Calystegia pulchra
Hairy Bindweed
Campanula cervicaria
Bristly Bellflower