Who we are

We are a collaboration of individuals dedicated to engaging our visitors in learning about plants, preserving Thelma and Charles Mercer’s legacy by providing financial support to Mercer Botanic Garden, inspiring future generations and continuing the rebuilding of Mercer Botanic Garden following the devastating April 2016 tax-day floods. We are a non-profit 501(c)(3) organization partnering with Mercer Botanic Garden.


Mercer Botanic Garden is open daily at 8 am. Closing hours change seasonally so please check Harris County Precinct 4 website for details. The Mercer Society offices are open Monday–Friday from 9 am to 5 pm.
The Mercer Gift and Plant Shoppe is open Monday - Saturday from 10:00 am to 4:00 pm and Sunday from 11:00 am to 4:00 pm.

Gardens are Closed On: Thanksgiving Day, Christmas Eve & Day, and New Year's Day. Admission to the gardens is always free.

Getting Here

22306 Aldine Westfield Road
Humble, Texas 77338


Raise the Roof Campaign

One key structural result of the historic April 18, 2016 Tax-Day floods, was the loss of a wooden footbridge connecting Story Lake Garden to the rest of Mercer. Harris County Precinct 4 will replace the old bridge this summer, and we are raising money to build a roof over it to make it a true gateway to Storey Lake.

Donate Now to Raise the Roof


Ever-changing botanical beauty, horticultural displays and programs will inspire you to visit Mercer Botanic Gardens often. Becoming a member not only gives you many valuable benefits, but also gives you a sense of being a part of this botanical treasure. Our members are essential to the Garden's sustainable growth and continuing success.

Join Today

Get in Touch



June 20–23, 2017

Botanical Time Tunnel (Session A, ages 6–8)

Journey through time during Mercer’s four day botanical adventure! Day campers will explore a variety of plants from different eras […]

June 27–30, 2017

Botanical Time Tunnel (Session B, ages 9–12)

Journey through time during Mercer’s four day botanical adventure! Day campers will explore a variety of plants from different eras […]

July 22

Summer Garden Club - Gingers in Your Garden

Part two of our Summer Garden Club Series continues with “Gingers in Your Garden.”  The Queen of Gingers, Ceil Dow, […]

August 26

Summer Garden Club - Garden to Vase

The third in our Summer Garden Club Series is “Garden to Vase.”  Pat Hermes, Houston School of Flowers, will guide you […]

September 16

Summer Garden Club - Basket Weaving

The fourth and final entry in our 2017 Summer Garden Club Series is led by skilled artisan Pat Hoge in […]

Recent News

  • Fern’s Favorites!

    Mercer’s resident authority on all that is unique and special about our Gardens, Fern is Mercer’s beloved canine mascot who […]

  • What’s new in the Mercer Gift and Plant Shoppe!

    Lightweight and bright jewelry for all the ladies spring and summer fashions; necklaces, bracelets and earrings are featured in the […]

  • Wild About Woodies

    Stephen F. Austin (SFA) Gardens is hosting the Third Annual Industry Day: Wild About Woodies on June 30, 2017 from […]

  • Hello world!

    At long last, The Mercer Society is delighted to launch our new website.  We hope you are going to enjoy […]