water hyacinth (pontederia crassipes or eichornia crassipes) growth wildly on the dam

agriculture field flower plant meadow grass crop shrub green grassland prairie soil lawn produce wildflower plantation vegetation pasture water hyacinth massively growth fresh dam creating sedimentation pontederia crassipes eichornia wildly enceng gondok eceng ecosystem water fresh lake dam irigation massively wild plants sedimentation growth pest cover surface reduce oxygen sun waste consume