The “fuss” about invasive plants in the Texas Hill Country stems from their ability to disrupt native ecosystems, degrade wildlife habitats, and cause various economic and environmental problems. Invasive plants sometimes spread aggressively, often outcompeting native species for resources like water, sunlight and nutrients. This leads to a decline in native plant diversity and can alter the overall structure and function of ecosystems. Invasive plants can alter habitat, reducing the availability of food and shelter for native animals. They can contribute to increased wildfire risk, as they tend to be more flammable than native vegetation. They also “drink up” a significant amount of water from our aquifers, which is the last thing we need in a Stage 4 water restriction.
So, should you plant only Texas natives when considering new plant material for your yard and landscaping? Not exactly. Here’s where it gets tricky.
Just because a plant is non-native doesn’t automatically designate it as an invasive. A plant must be both non-native and cause harm to the environment, economy, or human health to be classified as an invasive. Many non-native plants can coexist peacefully with native species without causing disruption. Some non-native plants can become naturalized, meaning they establish and persist in a new environment without causing significant harm.
Yes, native plants are generally a better choice when designing a garden or landscaping your yard because of their ability to grow with very little upkeep. They simply need to get established and then you barely need to do anything. But don’t automatically discount all non-natives as invasive. Lavender and marigolds adapt well in this area and can be beneficial, supporting pollinators and even improve soil health.
So, familiarize yourself with common invasive plants in your area. Remove them and never replant. Visit the Native Plant Society of Texas website, npsot. org or texasinvasives. org to learn more.
