What types of pollen affect hay fever, and when?

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What types of pollen affect hay fever and when?
Hay fever season is usually between March and
September when plants release pollen as millions
of microscopic particles. During this time, the
pollen numbering is sometimes included in weather
forecasts it just means how much pollen is in
the air that day. Hay fever usually gets more
harmful as the pollen count gets higher, so hay
fever sufferers choose to avoid going outdoors.
But if your hay fever symptoms are severe, or if
they are worsening it is advisable to talk to
your doctor for hay fever treatments. Grass
pollen Weed pollen Tree pollen Crops