Quick reference PDF fact sheets about various invasive species that are currently a concern in Delaware.

Plants

• Bradford Pear (2017)
• Chinese Fountain Grass (2019)
• Chinese Silver Grass (2018)
• Creeping Jenny (2023)
• English Ivy (2022)
• Hydrilla (2020)
• Japanese Barberry (2018)
• Japanese Honeysuckle (2022)
• Japanese Hops (2024)
• Japanese Knotweed (2024)
• Kudzu (2024)
• Lesser Celandine (2022)
• Linden Viburnum (2020)
• Poison Hemlock (2023)
• Porcelainberry (2024)
• Tree-Of-Heaven (2018)
• Waterwheel (2017)
• Wavyleaf Basketgrass (2015)

Animals

• Amynthas spp. (Earthworms) (2018)
• Blue Catfish (Updated 2024)
• Brown Marmorated Stinkbug (2016)
• Emerald Ash Borer (2017)
• Mute Swan (2020)
• Flathead Catfish (2023)
• New Zealand Mudsnail (2022)
• Northern Snakehead (2016)
• Red Imported Fire Ant (2019)
• Red Swamp Crayfish (2020)
• Spongy Moth (2023)
• Spotted Lanternfly (2022)
• Zebra Mussels (2023)

Pathogens

• Ranavirus (2019)
• Thousand Cankers Disease (2015)
• White-Nose Syndrome (2018)