5
Streptopelia decaocto
Eurasian Collared Dove
3
Leptinotarsa decemlineata
Colorado potato beetle
9
Carpobrotus edulis
Hottentot-fig
5
Harmonia axyridis
Harlequin ladybird
6
Procambarus clarkii
Red swamp crawfish
6
Cyanopica cyanus cooki
Iberian Azure-winged Magpie
6
Myriophyllum aquaticum
Parrot's-feather
3
Cydalima perspectalis
Box tree moth
4
Argiope trifasciata
Banded garden spider
4
Estrilda astrild
Common Waxbill
6
Robinia pseudoacacia
Black locust
6
Euplectes afer
Yellow-crowned Bishop
8
Cacyreus marshalli
Geranium bronze
7
Arctotheca calendula
Capeweed
5
Cotula coronopifolia
Brass buttons
7
Oxalis pes-caprae
Bermuda buttercup
5
Zantedeschia aethiopica
Calla lily
5
Eichhornia crassipes
Water hyacinth
2
Tradescantia fluminensis
Wandering Jew
4
Cyrtomium falcatum
House holly-fern
6
Acer negundo
Box elder (= Manitoba maple)