Pollen is a powdery substance produced by trees, grasses, weeds, and flowering plants for reproduction. It is one of the most common triggers for seasonal allergies (also known as hay fever).3 Pollen can be transported from plant to plant by the wind, birds, or insects.
Pollen is most active in the spring and summer (March to June). In some cases, pollen can still be present in October (especially during a warm year) but dissipates when cold temperatures and frost set in.
Allergy Therapeutics plc (LON:AGY) is a market-leading, pioneering immunology business with specialist experience in the research and development of allergy treatments.