Highland Lakes Chapter

Native Plant Week – Native Plant Sale and Urban Forest Presentation 

Celebrate Native Plant Week at the Native Plant Society of Texas Fall Native Plant sale Saturday, October 28, 9:00 am on the Burnet Courthouse Square.  Locally grown native trees, shrubs and plants will be available. Experienced gardeners will be on hand to answer questions on choosing the right native plant for one’s landscaping goals.

In addition to expert plant advice, a “Natives in the Urban Forest” presentation will be delivered by Dr. Valdez Barillas, Associate Professor of Biology at A&M-San Antonio at 10:30 am in the library on the Burnet Courthouse Square. Professor Barillas’ talk will include:

1. How a changing climate is showing us the importance of trees and native plants in urban areas.

2. How to develop a landscaping plan which integrates soil characteristics and native trees to form a healthy plant and tree community and canopy.

3. How planting an urban forest helps clean our air and water while cooling our towns and cities.

Dr. Valdez Barillas earned his Masters and Ph.D. in Rangeland Ecology at Colorado State University.  He has recently established a Field Ecology Laboratory that supports undergraduate and graduate research. His research involves collaborative work with Texas Parks and Wildlife on the ecology of plant-insect-microbes interactions in native versus non-native invasive plants.

About the Region

2026 Fall Symposium Logo

This low-elevations region of Texas extends inland from the barrier islands, about 60 or so miles, and stretches from Brownsville to Louisiana. In total, it covers about 9.5 million acres, with a high point of 150 feet in elevation. More than 1000 species of plants can be found in this region. On the southern end, species more common in Mexico (such as Sabal mexicana) and Central America occur.

The barrier islands provide us with dune systems, and clay flats to the inland side, which have species found in these areas alone. Many plants here, such as Ipomoea pes-caprae (beach morning glory), can be found throughout tropical regions of the globe. I’ve encountered the same species on the beaches of Guam.

Once inland, vast marshes and wet prairies occur. Occasionally, oak (Quercus fusiformis) groves can be found. Common grasses include species of Bothriochloa, Paspalum, and Sporobolus; eastern gamagrass (Tripsacum dactyloides); and switchgrass (Panicum species). Many rivers and creeks cut through the Gulf Prairies, and along these riparian areas various species of trees, Sabal minor, and other plants adapted to clay soils can be found. Due to overgrazing, farming, and fire suppression, woody species such as mesquite (Prosopis glandulosa) and huisache (Acacia farnesiana), and invasive species such as chinaberry (Melia azedarach), Brazilian pepper (Schinus terebinthifolius), and Chinese tallow (Sapium sebiferum) have increased and displaced our native flora.

Source: Wildflowers of Texas by Michael Eason