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Q: Why are invasive, exotic plants considered to be nuisances?
A: They are not good because
they escape from cultivation. While this may not be a bad trait for all
species, those that are considered invasive have shown that they will aggresively
invade surrounding properties, from natural lands to cultivated landscapes.
Allowing these species to grow on one's property and to invade neighboring
property is irresponsible, and their invasion may lower the value of the
property being invaded. Bamboo and camphor trees invading from neighboring
properties have caused structural damage to homes, melaleuca trees and cogon
grass are highly flammable and have caused catastrophic fires, and many
aquatic exotic species interfere with stormwater drainage and cause fish
kills. Villages in Africa have even engaged in biological terrorism--purposefully
planting water hyacinths in the lakes that neighboring villages use for
transportation and fishing. Water hyacinths quickly cover entire lakes and
make it impossible to boat on them, and once established, water hyacinths
are nearly impossible to eradicate.