Invasive Plants and other Nuisance Plants
Invasive plants are a problem in the desert Southwest. They can outcompete natives for water and space. Non-native grasses often burn very hot and if they catch on fire, can kill even saguaros. Many of these plants are designated Arizona Noxious Weeds by the Arizona Department of Agriculture.
The plants shown on this page are divided into three groups:
- Invasive Plants - these plants can spread rapidly and are a threat to the desert ecosystem.
- Noxious Weeds - these plants spread and are a particular problem in rangeland and farm fields. Many invasive plants are also Arizona noxious weeds. They are listed on this page only under Invasive Plants.
- Non-native plants that spread - these non-native plants can grow enthusiastically, especially in irrigated areas. They do not pose as much of a hazard as invasive plants and noxious weeds. Some of them have been spreading in the United States for over 100 years.
Just click on the photo to learn more about the plant.
Invasive Plants
The following invasive plants can be found in the southeastern Tucson area. Click on the photo to learn more about the plant. The newest invasive plant in the Tucson area is stinknet. It has been found at several locations in western Tucson. Please be on the look out for this plant!
