Pollen allergy
Disease Information
In-Depth
What is pollen?
Pollen is a fine powdery substance, composed of microscopic cells that come from flowering plants, including trees, grasses and weeds. Plants that produce pollen include:
- Oak, western red cedar, elm, birch, ash, hickory, poplar, sycamore, maple, cypress, walnut and other trees
- Grasses such as Bermuda, timothy, orchard, sweet vernal, red top and some blue grasses
- Weeds like ragweed, sagebrush, pigweed, tumbleweed, cockleweed and Russian thistle.
- Most flowering plants, such as roses, have heavier, waxy pollens that do not trigger allergies
When is pollen season?
Every plant has its own pollen season, but in general pollen season lasts from the early spring until October.
Are there ways to prevent or minimize hay fever during pollen season?
- Keep windows closed at night and use air conditioning, which cleans, cools and dries the air.
- Minimize your child’s outdoor activities between 5 and 10 a.m., when pollen is most prevalent.
- Drive with the car windows closed.
- When the pollen count is high, minimize the amount of time your child spends outdoors.
- Do not permit your child to play in piles of raked leaves.
- Do not hang your child’s bedding or clothing outside to dry.
- Give your child the medications prescribed by your child’s physician.
- Vacation in areas, like the seaside, where pollen is less prevalent.



As the days get longer and warmer, most people’s thoughts turn to baseball, barbecues and breaking out their summer clothes. It’s a carefree time for many, but as an allergist spring is my busy season. In the northeast trees pollinate first, which means many allergy sufferers notice symptoms as early as April. Learn more about managing your child's springtime allergies in Dr. Andrew MacGinnitie's