Become a Texas Master Naturalist

The Rio Grande Valley is an incredibly unique region of Texas. Through the Texas Master Naturalist program you will learn about sabal palm forests, resaca waterways, gulf waters, and native plant species – just to name a few of the fascinating topics explored through expert class instruction, field trips and hands-on training.

TMN Program

The Texas Master Naturalist program harnesses the power of volunteerism to expand knowledge of the landscape history, and vibrant flora and fauna of the State of Texas. For more info: txmn.org.

RGV Chapter

The Rio Grande Valley (RGV) sits at the southern most tip of Texas; with the Rio Grande to the south and the Gulf of Mexico to the east. The RGV Chapter has been serving the 4-county region for nearly 25 years.

Projects & Partners

The RGV Chapter partners with a wide array of entities and projects – coastal to ranch land – supporting various projects related to education and enhancing the native plant and wildlife species.


How to Become a Texas Master Naturalist

30 Classroom Hours
10 Field Trip Hours
40 Volunteer Hours
8 Advanced Training Hours
Calendar of Events

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