I-35 Monarch Waystation Interpretive Signs: Gardens Support Monarch Migration through Texas

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I-35 Monarch Waystation interpretive signs were dedicated in ribbon cutting ceremonies held on October 2, 2021, at Hill and Bell County safety rest areas (SRA). These signs are part of a collaborative effort between federal and state governments and the Native Plant Society of Texas (NPSOT). The Society designed and installed Monarch Waystations featuring native pollinator plants at Texas Department of Transportation (TxDOT) highway SRA in 2016, with funding by a grant from the US Fish & Wildlife Service (USFWS).

Flower bed of pink rock rose
Pavonia lasiopetala (Rock Rose) Hill County

Kay Jenkins and Kim Conrow from NPSOT, Katie Boyer from USFWS and Brent Johnson & Khoa Nguyen from the TXDOT spoke about the educational and safety values of the signs and gardens to the public. It is important for humans to take breaks from driving. The SRA give drivers needed time to refocus and come back to driving as refreshed and safer drivers. Having the gardens and signs in SRA are a wonderful addition to the human experience and help to accomplish the goal of having safer drivers on our highways.

The gardens do double duty as patches of habitat that provide host and nectar plants necessary for Monarchs and other pollinators to produce successive generations. Texas is on the path of the Monarch annual migration and I-35 has been designated as the Monarch Highway. The rest areas act as waystations to both humans and pollinators. Food, shelter and rest can be found there for all!

Concept of Monarch Waystation I-35 sign, 2 green, leaf shapes on either side of a yellow circle to imitate a flower.
“Welcome to the Monarch Highway!” Monarch Waystation educational sign.

Thanks to everyone who helped!

The signs were designed by Interpretive Insights in Houston, owned by Amanda Hughes-Horan. They were produced in South Dakota by Gopher Signs. They were installed by Fast Signs in Waco with help from TxDOT hole-digging crews led by Tim Meeks and Jerrod Swift. The life cycle graphic was done by Society member Susan Smith. The photographs were created by Carol Clark, who along with Kay Jenkins and Suzanne Tuttle finalized the text of the signs. Led by Kay Jenkins and Ilse Meir the gardens have been maintained by members of the Society, Master Gardeners and Master Naturalists in both Hill and Bell Counties. The original garden plants were chosen by Carol Feldman. This has been and continues to be a group effort!

Close up of plant grouping, white blossoms and sage
Asclepias viridis (Green Milkweed), Salvia greggii (Autumn Sage) Hill County

Small acts make a big difference

We are making a difference. Native plants provide beauty, durability, and life. Lets all do everything we can to plant life-sustaining native species. This simple act can bring joy to your life as you see your surroundings filled with butterflies and birds. We have taken the opportunity, through applied environmental knowledge and strength of will, to protect the Monarchs and other pollinators so that they will be here long into the future. The I-35 gardens and signs will help to educate millions of people about the Monarch Highway, the plight of the monarch butterflies, their amazing lifecycle and ways that anyone can help through the choice of plants they put in their home landscapes.

How to Help

To donate to the I-35 Monarch Waystation program, please visit Donate to a Project.

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**ARCHIVED POST AUTHOR: kimconrow

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