Our Team

Founded in 2015, Zilker Botanical Garden Conservancy is a 501c(3) non-profit organization (ZBGC) dedicated to restoring this gem of a botanical garden on the banks of Lady Bird Lake. The Conservancy has supported the City’s efforts to improve the landscape and experience of the ZBG. Upcoming planned efforts include supporting Phase 2 of the vision plan for this treasured city amenity as well as initializing a capital campaign.

The Conservancy is also partnering with the City increasingly on a variety of programming and is taking the lead in the development of hands-on STEM field trips for K-12 school groups. This includes underwriting costs for transportation and field trip fees for students from Title 1 schools in Austin.

All partners view the Garden as a place for building community, not just for viewing plants. ZBG welcomes more than 125,000 visitors a year and hosts 26 active garden clubs.

All of the existing partners at the ZBG are passionately committed to crafting a vision in a way that protects and promotes the ZBG for generations to come. In the future, the Conservancy aims to increasingly transfer operational activities for ZBG to their staff and volunteers and has already begun to transition parts of the operations, such as gate operations. As these transitions occur, it is paramount that the ZBGC, AAGC, and the City of Austin converge around a shared vision. If each stakeholder asserts their strengths and institutional knowledge, they can ensure fundraising keeps up with this shared vision and greater plans to come.

Development Director

Holly Hawk


As Development Director, Holly’s focus is building relationships in support of the Garden’s mission. Holly comes to the Zilker Botanical Garden with a background in conservation biology and years of experience in science education as her foundation. She has served in several leadership roles in non-profits throughout Austin and is passionate about growing the garden alongside her hometown of Austin.  

Operations Manager

Laura McCabe


As Operations Manager Laura is responsible for gate and gift shop staffing & training, ticketing, and IT management. Laura comes from a 20-year background in management, training, and operations in everything from family-owned comic shops to nationwide enterprises.  Originally from New York, Laura has lived in Austin for over 10 years and loves the spirit of the city.  She is excited to be a part of the ever-growing community at ZBG and values its long history.  Outside of the Garden, you can find Laura playing board games with friends, talking someone’s ear off about comic book theories, being bossed around by her two cats, or jamming on her bass guitar. 

Operations Manager II

Heather De La Garza


As Operations Manager II, Heather oversees and implements SOPs, training, contracts, and calendar planning between all partners. Heather has been developing her career in Operations Management for 20 years, within varying business structures. Her work values have focused on project collaborations, staff advocacy, and creative problem-solving. She hails from San Antonio, Texas, but moved to Austin over 20 years ago. She appreciates Austin’s unique vibe and its many, thriving green spaces. When not working, she enjoys time with her daughter, fur babies, many plants, and her husband Bobby.

Education Director

Matthew Gaston


As Education Director, Matthew coordinates all school group visits, tours, educational programming, docent management, and develops educational resources. Originally from San Antonio, Texas, Matthew spent many days as a youth enjoying and volunteering at the San Antonio Botanical Garden. He moved to California to attend UC Berkeley to study genetics, plant biology, and education focusing on teaching and mentoring students across the San Francisco Bay Area. During this time, he was also an intern at the San Francisco Botanical Garden focusing on native plants. After graduating, he attended UH Mānoa studying tropical plant and soil science and teaching plant physiology, horticulture, and organic farming.

Public Relations Coordinator

Monica Sivilli


As Public Relations Coordinator, Monica manages the website, social media channels, events, and communications. Monica applies 10 years of diverse experience in event planning, branding, and social media management to increase awareness of the Garden within the community and beyond. Originally from Florida, she is proud to call Austin her home of 5 years. Monica enjoys trying new restaurants, traveling, and spending time outdoors with her fiancé and pup in her free time.

The Executive Board

Board Members

  • Stephanie Saulmon
    Stephanie is that rare breed of native Austinite who grew up here and remembers when it was a sleepy college town. After moving to New York City where open space is a premium, she gained an appreciation for public parks and urban planning. She acquired hands-on knowledge of garden installation working for Brooklyn landscape designers before pursuing her degree in Landscape Architecture at the City College of New York. Stephanie went on to practice for NYC landscape architecture firms on school yards, parks, plazas, university master plans, and residential estates. At the Central Park Conservancy, she oversaw renovations of historic adventure-style playgrounds and the archaeologically significant Forts Landscape. Stephanie returned to her hometown in 2015. She is interested in the challenges cities face as they grow and promotes the preservation and integration of local ecologies, hydrologic systems, and urban societies. As a mother of two, she is passionate about the development of dynamic play environments that engage kids and adults in the natural world. She is currently working on Kingsbury Common in Pease Park, Centennial Park in Midland and YMCA Camp Moody.
  • Jeff Pavlat
    Jeff Pavlat is a graphic designer and horticulturist passionate about gardening, conservation, and educating the public on the botanical treasures of our world. He is President of the Cactus & Succulent Society of America and Vice President of Education for the Austin Cactus & Succulent Society. He has been volunteering at Zilker Botanical Garden for the past sixteen years. He helped establish the Conservancy and served as Interim Executive Director for 2 1/2 years.
  • Rachel Raise
    Rachel Raise is a landscape architect and owner of Raise Design Landscape Studio. Her first job was at the San Antonio Botanical Gardens in high school, and she has been following the flowers ever since. She graduated from Pitzer College, in Claremont, California with a degree in Sustainable Design and soon was pulled back to Texas to attend UT School of Architecture, where she received her Master of Landscape Architecture degree. Since then she has been fortunate to work on projects of all scales, in both the private and public sector, but ultimately was most drawn to residential design and started Raise Design in 2020. She is a passionate pollinator enthusiast and gardener and is the co-founder of PollinATX, an organization that advocates for and educates on the many benefits of pollinators in Austin. 
  • Leah Romero
    Leah is a native Texan with an interdisciplinary background in architecture, landscape architecture, and journalism. In addition to serving on the board of the Zilker Botanical Garden Conservancy, Leah gives her time to other Austin nonprofits, Girl Forward and the Tapestry Singers Scholarship Committee. 
  • Cassie Gowan
    Since getting her Master’s in Landscape Architecture from UT Austin in 2008, Cassie has worked for several well-known landscape architecture firms in Austin where she has honed her skills in project conception through documentation and construction administration. Her project experience ranges from smaller scale ranch and residential projects to larger urban scale campus, and multi-use and hospitality projects. With an innate need to create, she has a keen interest in the potential intersections between architecture, art, and landscape architecture. Cassie is thrilled to be a part of the creative collaboration family at dwg.
  • Jeannie Ferrier
    Jeannie is a retired cosmetology teacher of 34 years. Raised in Austin Texas since 1958 after traveling from Germany to Austin at the age of one. I have always had a love of hair and making people feel good. After retirement, my love turned to gardening and ponding and of course my two grandsons. I have been involved with ZBGC since before it was established. I can never say no when I am asked to help out at ZBG. I have served on the board for three years and on the ex-board for the last two years as secretary. I have been the chair of our very successful fundraiser The Starlight Social for the last two years. I have volunteered as the operations manager for about a year. I enjoy people and have a love for this garden. 
  • Alan Glen
    Alan Glen is an Austin environmental attorney whose practice is focused principally on endangered species.  He frequently assists clients with regional planning and conservation strategies under the Endangered Species Act.   He is a graduate of Stanford and the University of Texas School of Law. He served for a number of years on the Advisory Board of the Ladybird Johnson Wildflower Center, including during the time when the Center converted from a private charitable organization to a unit of the University of Texas. 
  • Judith Craft
    Judith Craft is retired from Wheatsville Coop and is an avid gardener and very involved in the Austin gardening scene.
  • Cristina Calvourarte
    Persistent enthusiastic entrepreneur providing products and services in Spain and United States.
  • Wilda Campbell
    Wilda Campbell, born and raised in Texas, is retired from an international career in women and child health care. She worked for most of 3 decades in Asia and became an avid outdoors person while living in Nepal where she trekked in the Himalayas. For over 12 years she owned an elephant in a Nepal wildlife resort where she could ride into the jungle on her elephant. She has lived and worked in India, Bangladesh, Indonesia, Thailand, and Jordan. After retiring to Austin, she joined the ZBG Docents Club and subsequently, the AAGC Board. She built a cabin on family-owned land near Hamilton Pool and has become a more active birder.
  • Karen Kalergis
    Karen Kalergis is a resiliency consultant who is living proof of the adage that gardening is good for your mind, body, and soul. She fell in love with Zilker Garden when she first came to Austin in 1984, and now spends her retirement days on efforts to sustain and improve it. Karen is a longtime member of the Austin Herb Society and now serves as its President. She is a member of the Executive Committee of the Austin Area Garden Council and serves as their representation to the ZBGC Board. 
  • Margaret Galton
    Margaret Galton is a Talent Buyer working on Festivals and Concerts at C3 Presents. In the past eleven years, she has had the privilege to work on accounts such as Austin City Limits Music Festival, Stubb’s Waller Creek Amphitheater (Indoors and Outdoors), Live Out Festival, C3 Concerts in various Austin venues and all throughout Texas, Longhorn City Limits, Auckland City Limits, Sydney City Limits, Austin Food and Wine, Nickelodeon SlimeFest, and The White House Easter Egg Roll (Obama Administration).

Emeritus Board Members

  • Frank Cooksey
  • Evan Taniguchi
  • Mary Ann Neely
  • Collette Pierce
  • Ed Parken