"Other days, when it seems clear that what I'm spreading is nonnative vegetation and disease, they've chased me away with canoe paddles; they've even suggested to me, through gestures and grimacing, that colonizing might be a funny way to express one's love."

nonnative.. hmmm.. [plugs it into OneLook]
nonnative
1) [adj] not native 2) [n] someone who is not a native

[palm-to-forehead emoticon]