Boerne Chapter

Climate Change…Learning Experiences

by Becky EternoBoerne Chapter, Native Plant Society of Texas
Published in the Boerne Star on July 18, 2014

My gardening career has progressed over almost 50 years through three distinctly different climates. Escaping the north’s long, wet winters, our move to Colorado in 1986 allowed me to learn a new plant palette suitable to the high, dry Boulder County plains. I eventually became somewhat expert in native/adapted/xeric/rock garden perennials and shrubs over 18 years in the CO green industry.

Red flowers

And now for almost seven years in the beautiful Hill Country, I’ve been learning another new plant palette – one which has very little congruence with the ones I already knew. However, the Texas move seemed “made to be,” since for years up north my “Texas Bed” hosted a series of tender Texas plants in the sunniest, warmest place I had. Most limped along for a few years, finally dying from winter cold.

Pink flowers

My familiar plants from the “Texas Bed” grow correctly here. Plants like Claret Cup cactus, Salvias greggii, darcyi, and leucantha, Texas Ranger, Agaves, Redbuds, Desert Willow all bloom earlier, longer and more freely down here where they belong. For instance, Claret Cup languished through Colorado winters only to revive and bloom in August. Here at home it blooms by March!

Purple flowers
Purple flowers

One plant genus, however, is an outright Texas star: the Salvias. Big, little, all colors – with an especially nice group of blue/purples and good reds, annual, perennial or shrubby , the aromatic salvias tolerate heat, drought, lean soil and the depredations of my least favorite animals – deer. Many are native to Texas, but other Southwestern and Mexican salvias like it here, too.

Trees and shrubs, too, required a new look. No pie cherries, crabapples, azaleas, lilacs or Asian witch- hazels here! Instead we have Cenizo in variety, lots of shrubby Salvias, hollies, oaks, Texas Mountain Laurel, Golden Leadball, Retama and the very beautiful Anacacho Orchid tree, to name only a few. Some handsome exotic woody plants love it here, too, even though the natives purist might scorn them – figs, olive, lacebark elm, tender roses like Rosa mutabilis and the gorgeous Crape Myrtle in many varieties.

Enough about plants, now to climate. Our heavy alkaline soils don’t present the major problem. “Winter,” the tough time, is summer here, the crucible for any introduced plant and even the natives.   I can’t say how many times I’ve thought “Yay! My – insert any cool plant name here – is going to adapt!” Only to see it melt away in July and August when there’s no “cool,” even at night. Hot, sun-baked soil alternating with root-rot-producing deluges of rain make adapting a real problem for most temperate-zone plants. I can’t think of a better way to be successful at Hill country gardening than to seek out and use natives whenever possible. They evolved with the climate – no “climate change” needed for them!

About the Region

Fall Symposium 2025 Logo - Teach for the Future

Salado, the location of our Fall 2025 Symposium, lies at the intersection of two ecoregions: the Edwards Plateau (Limestone Cut Plain) and Blackland Prairie (Northern Blackland Prairie).

The Edwards Plateau area is also called the Hill Country; however, this general term covers a much larger area extending farther north. Spring-fed creeks are found throughout the region; deep limestone canyons, rivers, and lakes (reservoirs) are common. Ashe juniper is perhaps the most common woody species found throughout the region. Additional woody species include various species of oak, with live oak (Quercus fusiformis) being the most common. Sycamores (Platanus occidentalis) and bald cypress (Taxodium distichum) border waterways. This area is well known for its spring wildflower displays, though they may be viewed in spring, late summer, and fall, as well. According to Texas Parks and Wildlife, average annual rainfall in the Edwards Plateau ranges from 15 to 34 inches.

The Blackland Prairie extends from the Red River south to San Antonio, bordered on the west by the Edwards Plateau and the Cross Timbers, and on the east by the Post Oak Savannah. Annual rainfall averages 30 to 40 inches, with higher averages to the east. This region is dominated by prairie species. The most common grass species include little bluestem (Schizachyrium scoparium) and Indian grass (Sorghastrum nutans) in the uplands and switchgrass (Panicum virgatum) in the riparian areas and drainages. Common herbaceous flowering plants include salvias, penstemons, and silphiums. This area has suffered greatly from overgrazing and agricultural use. Few intact areas remain, though many of the plants can be found along county roadsides throughout the region.

Our four host chapters (New Braunfels, Lindheimer, Guadalupe, and the Hill Country chapters) are located in one or both of the ecoregions above. However, the eastern portion of Guadalupe County also falls within the Post Oak Savanna ecoregion. Annual rainfall averages 35 to 45 inches, with higher averages to the east. A wide variety of hardwood trees are found, including several species of oaks, elms, and in the Bastrop area, loblolly pine (Pinus taeda). Grasses and forbs dominate in the open savannas, with most common grass being little bluestem. Ranching, agriculture, and fire suppression have allowed woody species to encroach on the once-open savannas.

Source: Wildflowers of Texas by Michael Eason