| Scientific Name | Common Name(s) | Life History | Growth Form | |
|---|---|---|---|---|
|
Berberis thunbergii 'Bagatelle' | Japanese Barberry | Perennial | shrub |
| Berberis thunbergii 'Crimson Pygmy' | Crimson pygmy dwarf Japanese barberry | Perennial | shrub | |
| Berberis thunbergii 'Rose Glow' | barberry, Japanese barberry, dwarf Japanese barberry, Rose Glow barberry | Perennial | shrub | |
| Bergia capensis | white water fire | Annual | forb | |
|
Berteroa incana | Hoary alyssum, Hoary false alyssum, Hoary false madwort, Hoary alison | Annual | forb |
| Bothriochloa ischaemum | Yellow bluestem, King Ranch bluestem, Old world bluestem | Perennial | grass | |
|
Brachychiton bidwillii | little kurrajong | Perennial | tree |
| Brachychiton populneus | Bottle tree, Kurrajong | Perennial | tree | |
|
Brassica oleracea | wild cabbage, kale | Biennial | forb |
|
Broussonetia papyrifera | Paper Mulberry | Perennial | tree |
| Buddleja davidii | Butterfly bush, Summer-lilac | Perennial | shrub | |
| Buddleja davidii | Butterfly bush, Summer-lilac | Perennial | shrub | |
|
Buddleja davidii 'Black Knight' | butterfly bush | Perennial | shrub |
|
Buddleja davidii 'Royal Red' | butterfly bush | Perennial | shrub |
|
Caesalpinia spinosa | Spiny holdback, Tara | Perennial | shrub |
| Calamintha sylvatica ssp. ascendens | woodland calamint, calamint, common calamint, wood savory, woodland mountain mint | Perennial | forb | |
|
Calendula arvensis | field marigold, wild marigold | Annual | forb |
|
Calotropis procera | Rubber bush, apple of Sodom, Giant Milkweed | Perennial | shrub |
|
Camellia oleifera | Tea oil Camelia | Perennial | tree |
|
Caragana arborescens | Siberian Peashrub | Perennial | shrub |
| Carduus pycnocephalus subsp. cinereus | Turkish thistle, Spanish thistle | Annual | forb | |
|
Carex divulsa | grey sedge, grassland sedge, Eurasian grey sedge | Perennial | grass |
|
Carex pendula | hanging sedge, drooping sedge, pendulous sedge | Perennial | grass |
|
Carpobrotus chilensis | iceplant, sea-fig | Perennial | shrub |
|
Carrichtera annua | Ward's weed | Annual | forb |