Ragweed season is from August to November in the Northern Hemisphere.

For information see Nova Scotia Museum and National Institute of Environmental Health Sciences.

Sadly "the only 100% reliable solution to hay fever is avoidance."  From Nova Scotia Museum about ragweed and other natural airborne irritants.

For those of us who need to go outside when irritants are in the air, wearing a comfortable, effective, quality I Can Breathe! Mask aids in avoiding airborne irritants. See Particles Filtered to choose an appropriate mask.

"Average size of allergy-producing pollen is 25 microns (one micron equals .000039 inches), but some may be as small as 2.5 microns or as large as 200 microns." Quoted from: http://www.tpwd.state.tx.us/publications/nonpwdpubs/young_naturalist/plants/airborne_pollen/

This page was last updated on 02/21/08.  I Can Breathe!