Sometimes the symptoms can be prevented by avoiding known allergens. During the pollen season, people with hay fever should remain indoors in an air conditioned environment whenever possible:
Most trees produce pollen in the spring.
Grasses usually produce pollen in late spring and summer.
Plants of ragweed and other late flowering produce pollen during late summer and early autumn.
Most trees produce pollen in the spring.
Grasses usually produce pollen in late spring and summer.
Plants of ragweed and other late flowering produce pollen during late summer and early autumn.
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