Know Your Triggers

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Harvard Medical School
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Chrome 2001

Know Your Triggers

Hay Fever
Know Your Triggers
Know Your Triggers
Knowing the specific type of pollen that could be causing you trouble goes a long way toward helping you deal with your symptoms.


Know Your Triggers

Some of Mother Nature's children are bigger troublemakers than others. For example, thousands of varieties of plants carry pollen (including more than 1,000 grasses alone), but only a handful or so are likely to cause allergic reactions. Flowers tend not to be of concern, because there's less of it than other types, and flower pollen is heavier than the pollen from trees and grasses.

Knowing the type of pollen that could be causing you trouble may help you to predict what seasons will cause you the most allergy symptoms. If you and your doctor decide that allergy shots would be recommended for you, then specific identification of your pollen allergy or allergies will provide your doctor with a “recipe” for what to include in your allergy shots. Also, check out our Pollen Season Chart to find out when various plants produce pollen.

Weed Pollens

  • Ragweed
  • Sagebrush
  • Red root pigweed
  • Lamb's quarters
  • Tumbleweed (Russian thistle)
  • English plantain
  • Sheep sorrel

Grass Pollens

  • June
  • Meadow fescue
  • Timothy
  • Orchard grass
  • Bermuda
  • Rye
  • Red top
  • Sweet vernal
  • Kentucky bluegrass
  • Johnson

Tree Pollens

  • Poplar
  • Oak
  • Maple
  • Elm
  • Birch
  • Beech
  • Ash
  • Hickory
  • Pecan
  • Western red cedar
  • Sycamore
Last updated January 12, 2012

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