Botanical name: Eichhornia Crassipes
PLANT NAME IN DIFFERENT LANGUAGES
Sanskrit: Plavaka, Ulpala, Plavakolpala
English: Water hyacinth
Malayalam: Kulavazha, African payal, Neerpola
Its habitat ranges from tropical desert to subtropical or warm temperate desert to rainforest zones. It tolerates annual precipitations of 8.2 dm to 27.0 dm (mean of 8 cases = 15.8 dm), annual temperatures from 21.1°C to 27.2°C (mean of 5 cases = 24.9°C), and its pH tolerance is estimated at 5.0 to 7.5. It does not tolerate water temperatures >34°C. Leaves are killed by frost and salt water, the latter trait being used to kill some of it by floating rafts of the cut weed to the sea. Water hyacinths do not grow when the average salinity is greater than 15% that of sea water. In brackish water, its leaves show epinasty and chlorosis, and eventually die.
In Kedah (Java), the flowers are used for medicating the skin of horses. The species is a "tonic.