Eriosoma lanigerum
Wooly apple aphid
Insects
Erysiphe azaleae
Azalea powdery mildew
Insects
Erysiphe flexuosa
Powdery mildew Erysiphe flexuosa
Fungi
Erysiphe palczewskii
Erysiphe palczewskii
Fungi
Erysiphe platani
Plane tree powdery mildew
Fungi
Fallopia spp.
Knotweed
Other
Gilletteella cooleyi
Douglas fir woolly aphid
Insects
Harmonia axyridis
Harlequin ladybird
Insects
Helianthus tuberosus
Jerusalem artichoke
Other
Hyphantria cunea
Fall webworm
Insects
Impatiens glandulifera
Himalayan balsam
Other
Impatiens parviflora
Small balsam
Other
Total: 69