Site: fredrikstaddistriktet
| Species | Scientific name | 1998 | 2015 | 2017 |
|---|---|---|---|---|
| Spanish Slug | Arion vulgaris | 1 | 7 | |
| Fagerfredløs | Lysimachia punctata | 3 | ||
| Hagelupin | Lupinus polyphyllus | 2 | 1 | |
| Kanadagullris | Solidago canadensis | 7 | ||
| Giant Hogweed | Heracleum mantegazzianum | 1 | 5 | |
| Kjempespringfrø | Impatiens glandulifera | 1 | 4 | |
| Parkslirekne | Reynoutria japonica | 1 | ||
| Rynkerose | Rosa rugosa | 8 | ||
| Lilac | Syringa vulgaris | 1 | ||
| Planteriket | Plantae indet. | 4 |
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