Collin County Chapter

Native Plants in the Spotlight

Our Disappearing Native Blackland Prairies

All North Texas native plant enthusiasts have to be pleased when the media spotlight focuses on a topic of great importance to us. The Dallas Morning News recently published an article on “North America’s most endangered ecoregion is in North Texas’ backyard. Here’s what you need to know” by Francesca D’Annunzio.

Red-winged blackbird perchedWidflowers on remnant patch of Blackland Prairie, Winfrey Point, White Rock Lake, Dallas Texas, USA

The story discusses the vanishing native Tallgrass Prairies, and specifically the Blackland Prairie in North Texas.

“The Blackland prairie is unique to Texas — and most of it is already gone. The ecoregion once extended from the Red River to the Gulf Coast. Now, less than 1% of the original Blackland prairie vegetation remains — and it’s scattered across the state in parcels, according to the World Wildlife Fund.

As rapid development threatens the prairie’s remaining patches, the loss comes at a cost to the region’s natural beauty, heritage and environmental health. Prairies help with carbon sequestration, flood control and help clean groundwater — for free.”

Discover More About Blackland Prairies

Below are some reference material and articles to learn more about our Blackland Prairies.

 

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