- Cool-Season Grasses: Golf courses often use cool-season grasses like Kentucky Bluegrass and Perennial Ryegrass, non-native to many areas. These can outcompete native plants and alter soil conditions.
- Invasive Ornamental Plants: Many non-native ornamental plants are used for landscaping on golf courses. Some, like Japanese Honeysuckle and Purple Loosestrife, can aggressively spread and displace native vegetation.
- Aquatic Plants: Golf course ponds and water features may harbor invasive aquatic plants like Water Hyacinth, Parrot Feather, and Eurasian Watermilfoil. These can hinder water flow, reduce oxygen levels, and negatively affect native aquatic life.
- Insects and Diseases: Construction and maintenance activities can transport non-native insects and diseases. For instance, the Emerald Ash Borer, a destructive invasive beetle, can be spread to nearby forests through firewood and equipment.
- Wildlife: Golf courses may attract wild animals, including non-native species, like Canada Geese. Excessive grazing by geese can degrade turf and native plant communities.
To minimize the introduction of exotic species, golf course developers and managers should use native plants, carefully select ornamental species, and implement biosecurity measures to prevent the spread of invasive species.
