a unique experience for students

It's FREE for EVERYONE to explore & enjoy

Get the dirt on our beautiful, natural trails and water features.

The BUTTERFLY GARDEN harbors many butterfly-attracting native plants for food, forage and shelter. The DUCK POND & DISCOVERY LAB is a place to sit & relax, while enjoying aquatic wildlife, riparian trees, marsh grasses and perennial flowering plants. Meander slowly along the stretch we call the SOUTH TEXAS NATIVE TRAIL where you will find native plantings of trees, shrubs, flowering plants and grasses. DRY GARDEN & GEOLOGY EXHIBIT is filled with native Texas boulder specimens and plants that enjoy limestone, gravel and rocky soils.

About the garden

The Palo Alto College Botanical Gardens provide a unique experience for students on the south side of San Antonio. Featuring seven acres of exhibits, this outdoor laboratory allows students to interact with nature and alternate sources of energy, which enhances their understanding of scientific theories. The gardens were partially funded by a grant from the U.S. Department of Education's College Cost Reduction and Access Act (CCRAA) to increase student success rates in the fields of science, technology, engineering and mathematics (STEM).

South Texas Native Trail

Meandering paths wind through the native south Texas plantings of trees, shrubs, flowering plants and grasses. Just inside the main entrance to the botanical gardens are several varieties of Texas heritage roses. The tranquil nature of the trail is enhanced by the sweet fragrances of kidneywood, orchid trees, and Texas mountain laurels. Bigtooth maples and dwarf palmettos are reminiscent of those found in the Lost Maples State Natural Area and Palmetto State Park. Near the southwest entry to the South Texas Trails, live oak trees are intentionally planted in a tight group to replicate a natural "mott" (or colony of one species of tree).

Butterfly Garden

Extending eastward from the Aquatic Center and Gymnasium, this area has many butterfly-attracting plants available for forage and shelter. These are necessary for the proliferation of these colorful insects. In a tranquil and peaceful setting is a small, screened-in insectary which functions as a protected nursery for caterpillars and beneficial insects. The adjacent area displays those plants most desired by migratory and indigenous butterflies and moths. Small log pieces and branches are placed in the garden to provide access to sap and bark. Parsley family plants (Apiaceae) are the favored caterpillar food of swallowtail butterflies, including the eastern black swallowtail, Papilio polyxenes. Dill and fennel punctuate the insectary beds to attract the metallic blue, black-white and orange-winged beauties.

The surrounding area is planted with bottomland hardwood trees (pecan, bald cypress, wax myrtle), flowering understory trees, grasses and flowering perennial plants specifically chosen for their butterfly-satisfying qualities. Included is a small water feature which replicates a Texas natural Hill Country spring. This feature provides butterflies, bees, dragonflies and other beneficial insects with a water source and a hiding place from predators. Trellises and screens surround the insectary to act as support for flowering vines, which act as "butterfly magnets." An open meadow at the west end of the trails called the Convocation Meadow allows for outdoor activities, sunbathing, study and rest. This maintained prairie serves as an outdoor venue for the Performing Arts Center.

Texas Dry Garden

Meandering paths wind through the native south Texas plantings of trees, shrubs, flowering plants and grasses. Just inside the main entrance to the botanical gardens are several varieties of Texas heritage roses. The tranquil nature of the trail is enhanced by the sweet fragrances of kidneywood, orchid trees, and Texas mountain laurels. Bigtooth maples and dwarf palmettos are reminiscent of those found in the Lost Maples State Natural Area and Palmetto State Park. Near the southwest entry to the South Texas Trails, live oak trees are intentionally planted in a tight group to replicate a natural "mott" (or colony of one species of tree).

Geology Exhibit

Texas Dry Garden

This garden demonstrates water conservation by growing and displaying plants that do well in low-humidity environments and drought-prone ecosystems. The area features plants that proliferate in alkaline (limestone) soils, such as agaves, yuccas, aloes, and palms. Water-conserving drip emitters and root-zone soakers comprise the irrigation system, which works in tandem with the fast-draining gravelly soil.

Geology Exhibit

Arranged at the main entrance to the botanical gardens and sprinkled throughout the Dry Garden beds, this exhibit consists of boulder-sized rocks from various regions of Texas. The specimens in the Texas Dry Garden are labeled with their names and places of origin. The boulder grouping area at the main entrance omits identifying information so that students and visitors can test their geology knowledge.

Duck Pond and Discovery Lab

Designed to lure whistler ducks from the nearby Mitchell Lake Audubon Center, this pond also serves as an outdoor classroom. Biology students can observe the life cycles of turtles, frogs, and fish, as well as the migratory behavior of ducks. Plantings in this area consist of riparian trees, native grain plants, marsh grasses and perennial plants. They include native Mexican sycamore trees, river birch (Betula nigra), pond cypress, dwarf palmettos, wax myrtle and yaupon hollies. Native San Marcos River wild rice rings the eastern edge of the pond for the ducks' food and forage. Bog plantings, such as bull rush, frogfruit and cobalt-blue flowered bog sage, Salvia uliginoides, nourish beneficial insects.

Energy Trail

This trail consists of a solar panel and a wind turbine. The energy generated by the solar panel powers the spring in the Butterfly Garden. Environmental biology students are able to analyze data on the amount of energy generated by the wind turbine under different weather conditions.