| Alder | ALNUS GLUTINOSA |
| Angelica | ANGELICA ARCHANGELICA |
| Ash | FRAXINUS EXELSIOR |
| Birch, Downy | BETULA PUBESCENS |
| Birch, Silver | BETULA PENDULA |
| Bittersweet | SOLANUM DULCAMARA |
| Black Medick | MEDICAGO LUPULINA |
| Blackberry, Bramble | RUBUS and ssp |
| Blackthorn, Sloe | PRUNUS SPINOSA |
| Bluebell | HYACINTHOIDES NON-SCRIPTA |
| Borage | BORAGO OFFICINALIS |
| Box | BUXUS SEMPERVIRENS |
| Broom | CYTISUS SCOPARIUS |
| Bugle | AJUGA REPTANS |
| Bullrush or Great Reed-mace | TYPHA LATIFOLIA |
| Buttercup, Creeping | RANUNCULUS REPENS |
| Buttercup, Meadow | RANUNCULUS ACRIS |