Pollen is the tiny egg-shaped male cells of flowering plants, including trees, grasses, and weeds.
Pollen is microscopic in size.
Most flowering plants, such as roses, have heavier, waxy pollens that are not as easily wind-blown. Each plant has a pollen season. The season usually lasts until October. Keep windows closed at night and use air conditioning, which cleans, cools, and dries the air. Keep cars windows closed when traveling.