'Botanical Sexism' Could Be Behind Your Seasonal Allergies

[IronLionZion]

2. Forests will be more balanced with male and female

cities have been planned to have more male trees.

The greater washington article describes the issue well, in that many types of trees have both male and female parts, and there are female trees that have been sterilized. For allergies in DC, they claim the most likely culprit are red maple trees, poplars, and gingkos.

When there is balance, the pollen is more likely to get to female trees faster. When it's unbalanced, there is more pollen released and flying around.