Welcome to Bayeku, a riverine community in Ikorodu, Lagos -- a vivid representation of several riverine communities across Nigeria, communities whose waterways have been infested by an invasive aquatic weed; communities where economic livelihoods have been hampered: fishing, marine transportation and trading; communities where fish yields have diminished; communities where schoolchildren are unable to go to school for days, sometimes weeks, on end. Who would have thought that this plant with round leaves, inflated stems, and showy, lavender flowers would cause such havoc in these communities.