Allergy seasons and prime pollens

Staff Writer
Columbus Parent
  • April through the end of May: tree pollen
  • May through the end of June: grass pollen
  • Mid-August through the first frost: weed pollen, including ragweed pollen
  • Mid-October through mid-November (the rainy part of the fall): mold spores
  • All year round: dust mite, cockroach, feather, animal dander.