Board & Staff

Coming Together

Our board and staff members are a collaboration of committed individuals dedicated to engaging our visitors in learning about plants and preserving Thelma and Charles Mercer’s legacy.

The 2017-2018 Board, representing nearly 500 members, is made up of a dedicated team of individuals profoundly dedicated to fulfilling The Mercer Society’s mission. We are committed to excellence, good management and fiscal responsibility.

Because Mercer Botanic Gardens is younger than many of the nation’s botanic gardens and arbiters, there is still considerable room for growth and development of the Gardens as well as its research and education efforts. The Board collectively invites you to join our mission by becoming a member of The Member Society.  Detailed information on the levels and benefits of membership is located on our membership page.

The Mercer Society office, temporarily located in The Mercer Society Gift and Plant Shoppe at 400 Main Street in Old Town Spring, TX, is open Tuesday through Friday 10:00 am to 4:00 pm for your convenience.

Board of Directors

  • Executive Officers
  • Maryanne M. EsserPresident
  • Catherine PowersVice President
  • David KleinTreasurer
  • Phil GraiffSecretary
  • Charlyn BrownAssistant Secretary
  • Katherine BurnsidesAssistant Treasurer
  • Sue Botts
  • Patrick M. Callaghan
  • Suzy Han
  • Mimi Kerr
  • Jon Lindsay
  • Alan Raymond
  • Jenna ThomasRice University Fellow
  • R.K. Viswanadham
  • Jim NutterTransitional Director - Mercer Botanic Gardens


  • Jane JentoftOffice Manager
  • Brandon HubbardHorticultural Manager
  • Kelli KnappGift & Plant Shoppe Manager