It's no secret that grasses, trees, and flowers produce pollen from spring to fall. Here's their tentative schedule: Grass pollen (March to October), ragweed pollen (July to November), tree pollen ...

Hay fever is an allergic reaction to pollen when it comes into contact with your mouth ... due to warm and dry weather. This causes grass pollen to rise. Plantain, dock, and nettle pollen are ...

Tree pollen is usually the first thing to trigger allergies, before grass pollen and weed pollen come later in the spring and ...