To control termites that attack dead material, hexachlorobenzene, also known as benzene hexachloride-BCH, can be applied to the vetiver hedge. Brown spot seems to have no effect on vetiver growth. Black rust in India is vetiver-specific and does not cross-infect other plants. In China, stemborers ("Chilo" spp.) have been recognised, but they seem to die once they get into the stems. Further, vetiver is affected by "Didymella andropogonis" on leaves, "Didymosphaeria andropogonis" on dead culms, "Lulworthia medusa" on culms and "Ophiosphaerella herpotricha". Only in Malaysia, whiteflies seem to be a problem. Pest management is done by using insecticides and by appropriate cultural management: hedges are cut to 3 cm above ground at the end of the growing season. In general, vetiver is tolerant to herbicides and pesticides.