Species Council

What is an Invasive Species?

An invasive species is an alien species whose introduction causes or is likely to cause economic or environmental harm or harm to human health.

Why are invasive species bad?

• Reduce native diversity by competing for resources, such as space, sunlight, water and minerals.
• Alter soil conditions by secreting chemicals that inhibit the germination or growth of other species
• Alter nutrient cycling by changing the amount, composition, or rate of decay of leaf litter.
• May hybridize with native species.
• Disrupt natural communities and change habitat structure for other organisms such as birds, mammals, turtles, fish and frogs.

Voluntary Codes of Conduct for the Gardening Public

1. Ask for only non-invasive species when you acquire plants
2. Seek information on what species are invasive in your area
3. Do not trade plants if you know they are species with invasive characteristics
4. Request that nurseries promote, display and sell only non-invasive species
5. Help educate your community and other gardeners
6. Seek the best information on control of invasive plant species and organize neighborhood work groups to remove invasive plants
7. Volunteer at gardens and natural areas to assist ongoing efforts to diminish the threat of invasive species
8. Participate in early warning systems by reporting invasive species your observe in your area