Lantana camara and water hyacinth are examples of:
Lantana camara native to Central and South America introduced into India in 1809 as ornamental shrub for its multicolored corymbs and year-round flowering. Eichhornia similarly introduced as aquatic ornamental. Both escaped cultivation demonstrating characteristics listed by Baker as ideal weeds: rapid asexual proliferation via suckers and stolons, high seed output exceeding 10,000 per plant, dormancy, tolerance to drought and waterlogging, and production of allelopathic secondary metabolites lantadenes and phenolics inhibiting germination of neighboring crops. Dense thickets reduce pasture ca
Ref: FAO Invasive Weed Management Lantana; CABI Datasheet Eichhornia and Lantana; BSI Invasive alien plants India.