Answer
Kudzu kills native plants by smothering them and blocking their sunlight. Climbing vines can girdle trees, and their weight can uproot trees. Loss of trees and plants to kudzu threatens agricultural and timber production. Kudzu would destroy the native species. Few plants can survive once smothered by kudzu and small ecosystems can be radically altered. Infestations quickly spread in open habitats, rapidly covering the soil and low growing vegetation, and only slowed by adjoining forests. Kudzu can affect indigenous plants and completely modify the structure of the ecosystem.
Kudzu is widely believed to drastically reduce biodiversity because of its ability to smother other vegetation and develop large-scale monocultures. It can climb overtop and subsequently kill new seedlings or mature trees. Forestry problems associated with aggressive vines such as kudzu include mortality of edge trees, exclusion of native plant species, and potential to increase fire hazard during winter.