Water hyacinth, native to South America, is now found across many continents. Its presence is well-documented in regions such as North America, Asia, Australia, and Africa. Often introduced for ornamental purposes or wastewater treatment, water hyacinth has established itself in some areas where it may be deemed invasive. While it may have an impact on ecosystems by outcompeting native flora, its global distribution highlights its adaptability to various climates and conditions.

Water hyacinth contains toxic compounds that cause poisoning if ingested by humans. Mistaken ingestion can cause intense abdominal pain, irregular heartbeat, and elevated blood pressure. Spraying water hyacinth with 2,4-Dichlorophenoxyacetic acid can lead to nitrate toxicity, resulting in blue baby syndrome, headache, and lowered blood pressure. Contaminants absorbed during harvesting make it more harmful when consumed.

Water hyacinth is native to South America and thrives in wetland habitats such as lakes and ponds. It is recorded as an invasive weed in over 120 countries, including the United States, Mexico, Brazil, Portugal, Australia, and India. In the U.S. state of Florida, water hyacinth is a prohibited noxious plant. It forms dense mats that clog waterways, reduce oxygen levels in water, and negatively impact fish. Furthermore, water hyacinth encourages the growth of organisms that promote malaria and other illnesses, and its presence harms local fishing and agricultural industries. When necessary, the weed can be controlled via pulling, herbicides, or the strategic introduction of insects.

The best season for removal of water hyacinth is during late spring or early summer when the plants are just beginning to bloom, and before they reach their maximum growth and start to seed. Here are some methods you can use to control or rmemove water hyacinth: