Maintenance / focus species are species that are already established in our region that we are actively working on. There may be a higher risk to harm our regional ecology. This list includes:
- Bittersweet (Celastrus orbiculatus)
- Buckthorns, common and glossy (Rhamnus cathartica, Frangula alnus)
- Common reed/Phragmites (Phragmites australis)
- European frog-bit (Hydrocharis morsus-ranae)
- Garlic mustard (Alliaria petiolata)
- Invasive honeysuckles (Lonicera sp.)
- Japanese barberry (Berberis thunbergii)
- Japanese hedge-parsley (Torilis japonica)
- Knotweeds, Japanese, giant and Bohemian (Fallopia sp.)
- Parsnip, wild (Pastinaca sativa)
- Red Swamp Crayfish (Procambarus clarkii) *this species is also on our priority list
- Spotted Lanternfly (Lycorma delicatula) *this species is also on our priority list
- Swallowworts, black and pale (Cynanchum sp.)
- Tree of heaven (Alianthus altissima)