Austin Chapter

National Invasive Species Awareness Week: Feb 20 – 26, 2023


Invasive species impact everyone. When not monitored or controlled, invasive species can cause harm to our economy, environment or human health. A 2021 study estimated that invasive species have cost North America over $26 billion per year since 2010.

This week is National Invasive Species Awareness Week (NISAW), an international event to raise awareness about invasive species, the threat that they pose, and what can be done to prevent their spread. NISAW encourages representatives from all levels of government as well as regional organizations to discuss legislation, policies, resources, and improvements that can be made to prevent and manage invasive species. Learn about NISAW and their policy priorities for the US Congress here.

There are many things you can do to help stem the tide of invasive species in Texas.

  • One of the most effective ways to manage invasive species is for recreationalists such as boaters, fishermen, pet owners, and gardeners to Take Action.
  • The Texas Parks and Wildlife Department (TPWD) lists five other ways to prevent the spread of invasives are listed here.
  • The Invaders of Texas Program is an innovative campaign whereby volunteer “citizen scientists” are trained to detect the arrival and dispersal of invasive species in their own local areas. That information is delivered into a statewide mapping database and to those who can do something about it. The premise is simple. The more trained eyes watching for invasive species, the better our chances of lessening or avoiding damage to our native landscape.
  • Replace your invasive plants with native plants using this guide.
  • Join the Native Plant Society of Texas whose mission is promoting research, conservation, and utilization of native plants and habitats through education, outreach, and example.

#NISAW #InvasiveSpecies #NPSOT #PlantNative #Biodiversity

About the Region

Fall Symposium 2025 Logo - Teach for the Future

Salado, the location of our Fall 2025 Symposium, lies at the intersection of two ecoregions: the Edwards Plateau (Limestone Cut Plain) and Blackland Prairie (Northern Blackland Prairie).

The Edwards Plateau area is also called the Hill Country; however, this general term covers a much larger area extending farther north. Spring-fed creeks are found throughout the region; deep limestone canyons, rivers, and lakes (reservoirs) are common. Ashe juniper is perhaps the most common woody species found throughout the region. Additional woody species include various species of oak, with live oak (Quercus fusiformis) being the most common. Sycamores (Platanus occidentalis) and bald cypress (Taxodium distichum) border waterways. This area is well known for its spring wildflower displays, though they may be viewed in spring, late summer, and fall, as well. According to Texas Parks and Wildlife, average annual rainfall in the Edwards Plateau ranges from 15 to 34 inches.

The Blackland Prairie extends from the Red River south to San Antonio, bordered on the west by the Edwards Plateau and the Cross Timbers, and on the east by the Post Oak Savannah. Annual rainfall averages 30 to 40 inches, with higher averages to the east. This region is dominated by prairie species. The most common grass species include little bluestem (Schizachyrium scoparium) and Indian grass (Sorghastrum nutans) in the uplands and switchgrass (Panicum virgatum) in the riparian areas and drainages. Common herbaceous flowering plants include salvias, penstemons, and silphiums. This area has suffered greatly from overgrazing and agricultural use. Few intact areas remain, though many of the plants can be found along county roadsides throughout the region.

Our fall Symposium host chapter, the Tonkawa Chapter, includes both of these ecoregions.

Source: Wildflowers of Texas by Michael Eason