Category: Central AZ

Buffelgrass (Pennisetum ciliare), originally from Africa, has become an invasive species in the Southwestern United States. Its rapid spread poses a significant threat to ecosystems, as it outcompetes native vegetation, alters natural fire regimes, and negatively impacts wildlife habitat. Effective management of buffelgrass involves a multifaceted approach, including prevention through public education and responsible recreation, early detection, manual removal, targeted herbicide application, and restoration efforts focused on reintroducing native vegetation and employing adaptive management strategies. Visit the USDA Weed Field Guide for the Southwest Website for comprehensive information on understanding, preventing, and managing buffelgrass to protect the health of Southwestern forests and grasslands.

Credit: USDA Weed Field Guides for the Southwest Region

• USDA Field Guide for Managing Buffelgrass in the Southwest PDF

Other Resources:

 

 

Common Sow Thistle (Sonchus oleraceus) is believed to be native to Europe and has become an invasive species in various parts of the world, including North America.

Common Sow Thistle is considered a problem due to its rapid growth, prolific seed production, and the ability to colonize disturbed areas. It can outcompete native vegetation, impacting biodiversity and disrupting ecosystems. The plant is known for its adaptability to different soil types and climates.

Effective management strategies for Common Sow Thistle involve a combination of preventive measures, early detection, and control methods. Control may include manual removal, mowing, targeted herbicide application, and promoting the growth of desirable native vegetation. Integrated pest management practices are often recommended to address the invasive nature of Common Sow Thistle.

Giant Reed (Arundo donax), believed to be native to the Mediterranean region, has become an invasive species in various parts of the world, including the Southwestern United States. This aggressive plant species poses a significant ecological threat due to its rapid growth, which can lead to the displacement of native vegetation, alteration of stream channels, and increased fire risk. Managing Giant Reed involves a comprehensive approach, including prevention, early detection, and control strategies. Control methods may encompass mechanical removal, targeted herbicide application, and follow-up monitoring to prevent its re-establishment. For detailed guidance on understanding and managing Giant Reed, please refer to the provided link on the USDA Weed Field Guide for this species.

Credit: USDA Weed Field Guide for the Southwest Region

London Rocket (Sisymbrium irio) is believed to be native to the Mediterranean region and has become an invasive species in various parts of the world, including North America.

London Rocket is considered a problem due to its rapid growth and ability to colonize disturbed areas. It can outcompete native vegetation, negatively impacting biodiversity and disrupting ecosystems. The plant is known for its adaptability to different soil types and its prolific seed production.

Effective management strategies for London Rocket involve a combination of preventive measures, early detection, and control methods. Control may include manual removal, mowing, targeted herbicide application, and promoting the growth of desirable native vegetation. Integrated pest management practices are often recommended to address the invasive nature of London Rocket.

Malta Star Thistle (Centaurea melitensis) is believed to be native to the Mediterranean region and has become an invasive species in North America.

Malta Star Thistle is considered a problem due to its aggressive growth, rapid spread, and the ability to form dense stands, displacing native vegetation and impacting ecosystems. It is known for its spiny leaves and rapid colonization of disturbed areas, reducing biodiversity and affecting forage availability for livestock.

Effective management strategies for Malta Star Thistle involve a combination of preventive measures, early detection, and control methods. Control may include manual removal, mowing, targeted herbicide application, and the introduction of biological controls, such as insects that feed on the plant. Integrated pest management practices are often recommended to address the invasive nature of Malta Star Thistle. For specific guidance, please refer to the information on the USDA Forest Service website.

Tumbleweed, often referring to Russian Thistle in the context of invasive plants, is believed to have originated in Eurasia and has become an invasive species in North America.

Tumbleweed is considered a problem due to its ability to spread rapidly, especially in arid and semi-arid regions. It can outcompete native vegetation, disrupt ecosystems, and contribute to soil erosion. The plant is known for its tumbling habit, dispersing seeds over large distances, leading to its widespread distribution.

Effective management strategies for Tumbleweed involve a combination of preventive measures, early detection, and control methods. Control may include manual removal, mowing, targeted herbicide application, and promoting the growth of desirable native vegetation. Integrated pest management practices are often recommended to address the invasive nature of Tumbleweed.

Salt Cedar (Tamarix spp.) is native to Eurasia and has become an invasive species in various parts of North America.

Salt Cedar is a problem due to its aggressive growth, rapid spread, and ability to dominate riparian areas. It can outcompete native vegetation, alter hydrological patterns, and negatively impact water ecosystems. The plant is known for its high salt tolerance, enabling it to thrive in saline environments.

Effective management strategies for Salt Cedar involve a combination of preventive measures, early detection, and control methods. Control may include manual removal, cutting, targeted herbicide application, and the use of biological controls, such as insects that feed on the plant. Restoration efforts, including the planting of native vegetation, are crucial for rehabilitating impacted riparian ecosystems. For the best management practices and specific guidance, please refer to the Field Guide for Managing Salt Cedar on the USDA Forest Service website.

Sahara Mustard (Brassica tournefortii) is believed to have originated in North Africa and has become an invasive species in parts of North America.

Sahara Mustard is considered a problem due to its aggressive growth, rapid spread, and the ability to outcompete native vegetation. It can form dense stands, negatively impacting biodiversity and disrupting ecosystems. The plant is known for its adaptability to various habitats, including arid regions.

Effective management strategies for Sahara Mustard involve a combination of preventive measures, early detection, and control methods. Control may include manual removal, mowing, targeted herbicide application, and promoting the growth of desirable native vegetation. Integrated pest management practices are often recommended to address the invasive nature of Sahara Mustard. For specific guidance, please refer to the information on the USDA Forest Service website.

Additional information  Sahara Mustard / UC Statewide IPM Program (UC IPM) (ucanr.edu)