Native Plant Alternatives to Lagerstroemia indica (Crape Myrtle)

Lagerstroemia indica, more commonly known as crape myrtle or crepe myrtle, is a widely commercialized ornamental shrub or small tree that hails from temperate and tropical Asia. Renowned for its vibrant flowers that bloom for an extended period, attractive bark that peels back to reveal a smooth and colorful layer beneath and vibrant autumn foliage, it’s a sought-after addition to many landscapes.

Due to its ornamental value, the crepe myrtle has been introduced to numerous tropical and subtropical regions worldwide. It’s a resilient plant, well-adapted to a variety of climates and conditions, and thrives particularly well in hot, humid environments.

Despite its aesthetic appeal, the crape myrtle’s successful proliferation in environments outside its native range has led to concerns about its invasiveness. In some regions, the plant’s aggressive growth and prolific seeding can lead to it becoming naturalized, meaning it grows and reproduces on its own and maintains its population long-term without human intervention. Once naturalized, it can crowd out native plants and alter habitats, characteristics of invasive species.

This is particularly the case in several regions where the crape myrtle has been introduced. Its ability to thrive in a variety of soil conditions, its drought tolerance, and its attraction to pollinators all contribute to its potential to spread and dominate certain environments.

While Lagerstroemia indica has thus become an invasive species in some regions, it’s important to note that “invasiveness” can vary by location. In some areas, crape myrtles may naturalize without significantly impacting local ecosystems, while in others, they may have more detrimental effects on biodiversity.

As such, it’s crucial for gardeners and landscapers to be mindful of the potential ecological implications of introducing non-native species to their local environments. It’s always a good idea to consult local horticultural or botanical societies or local extension services for guidance on the best plants for their area. Responsible planting and management can help prevent the spread of potentially invasive plants and protect local biodiversity.

According to the U.S. Forest Service, invasive species have contributed to the decline of 42% of U.S. endangered and threatened species and 18% of U.S. endangered or threatened species. Invasive species compete directly with native species for moisture, sunlight, nutrients, and space. They displace and alter native plant communities, degrade wildlife habitat and water quality, and potentially increase soil erosion.

The federal government has estimated that nearly 25 percent of the 20,000 plant species native to North America are at risk of extinction, many of these through habitat loss. You can help reverse this trend by planting native plants in your garden.

A plant is considered native if naturally occurring in a particular region or ecosystem without human introduction. There are many benefits in growing native plants. First, these plants are better adapted to soils, moisture, and weather than exotic plants that evolved in other parts of the world. They need fewer fertilizers and pesticides or use less water. Second, they are unlikely to escape and become invasive, destroying natural habitats. Third, they support wildlife, providing shelter and food for native birds and insects, while exotic plants do not.