The World is Out to Get Me

With the lovely weather we are having here in San Francisco many a blossom is in bloom and the trees are just pouring down a rain of pollen. I didn't used to have allergies but over the last five years things seem to have gotten worse and worse. A friend suggested that it's all the non-native species that have been planted everywhere, but that didn't sound right, after all, I'm a non-native species. My parents are not from here and their parents were not from where my parents grew up. But she had a point. Could we humans be the innocent victims in a war between different species of plant life? Are there trees around us putting out more, stronger pollen in an effort to dominate what terrain is left in this concrete jungle? Are the imported Australian Eucalyptus trees battling it out with the Japanese cherry blossom trees? Will the plant life eventually win out over all?