Texas regulates invasive plants through the Texas Agriculture Code and the Texas Department of Agriculture's noxious weed list. Harris County has additional concerns about specific aquatic invasives. The Texas Invasive Species Institute tracks problem species in the Houston region.
Texas manages invasive species through multiple agencies. The Texas Department of Agriculture (TDA) maintains a noxious weed list under the Texas Agriculture Code Chapter 71. Key prohibited/regulated species in the Houston/Harris County area include: Giant salvinia (Salvinia molesta) — a major aquatic invasive. Water hyacinth (Eichhornia crassipes) — clogs waterways. Chinese tallow (Triadica sebifera) — extremely invasive in East Texas. Japanese climbing fern (Lygodium japonicum). Hydrilla (Hydrilla verticillata) — aquatic invasive. Chinaberry (Melia azedarach). The Texas Parks and Wildlife Department regulates aquatic invasive species. The Texas Invasive Species Institute at Sam Houston State University tracks regional invasive species. Harris County Flood Control District addresses aquatic invasives in bayous and waterways. The Houston area's subtropical climate allows many non-native species to become invasive. Chinese tallow trees are particularly problematic in the greater Houston area.
Intentional introduction of state-listed noxious plants can result in penalties under the Texas Agriculture Code. Selling or transporting prohibited aquatic species violates Texas Parks and Wildlife regulations. Property owners may receive notices from the county to abate noxious weed infestations.
Houston, TX
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See how Houston's prohibited species rules stack up against other locations.
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