These plants are prohibited from possession, importation, sale or release in Texas, including in pet stores for decorative aquarium and pond use. Special permits must be obtained by zoos and aquariums exhibiting these plants, as well as for the use of water hyacinths in sewage treatment plants. According to Ron Jones, biologist at U.S. Fish and Wildlife, most of the banned aquatics are found in pet stores, nurseries, and at ornamental pond suppliers. According to Jones, this plant spreads aggressively and can migrate via broken buds on trailers, boats, vehicles and other means. A flyer from the U.S. Geological Survey states that Giant salvinia forms floating mats that shade and crowd out important native plants.
Thick mats reduce oxygen content and degrade water quality.
Mats snag boats and clog water intakes for irrigation and electrical generation. Giant salvinia is likely to be introduced with aquarium or water garden plants. WetNet provides access for resource managers and the public to biological, physical, and regulatory Geographic Information Systems data from participating governmental agencies. This program aims to improve the capabilities of state and federal regulatory agencies to protect and manage sensitive wetland resources in Texas. The site will soon include detailed sections on air and water quality, composting and energy conservation.