Delaware habitats are constantly being threatened by a variety of invasive species. Invasive species are plants (usually non-native) that are often very aggressive and out-compete and displace native flora and fauna. The Division of Fish and Wildlife provides landowners with assistance in controlling these invasive species in areas that directly benefit wildlife. 
A variety of species-at-risk are threatened by invasive species. Some of these are Japanese honeysuckle, mile-a-minute weed, and multiflora rose - all examples of invasive species found in upland habitats that are used by a variety of grassland birds and the Delmarva Fox Squirrel.
Purple loosestrife, reed canary grass, and phragmites are examples of invasive species that can be found in wetland habitats that are used by Bog Turtles, Tiger Salamanders, and wading birds like the Great Blue Heron. Invasive species control usually consists of using an approved herbicide and controlled burning.
Financial Assistance Available 
- 74 percent cost-share
- A flat rate of $118.40/acre for ground application of an approved aquatic herbicide within a wetland
- $59.20/acre if aerial application is required
- Invasive species control on upland habitat provides a flat rate of $55.50/acre
- A flat rate of $1,110.00/acre to control woody vegetation primarily using the stump/cut method where the tree is cut and herbicide is applied to the stump.
- If mechanized equipment is used for invasive species control, a flat rate of $333.00 may be provided. If the landowner does not want to accept the flat rate, and he/she will contract for the work to be done, then DNREC Division of Fish and Wildlife will reimburse up to 74 percent of actual cost of the practice after receiving a copy of the invoice from the contractor.
