Pollen:

Ragweed Pollen: Ragweed is a common plant that produces pollen and is a major cause of allergic reactions, particularly during the late summer and fall seasons. Ragweed pollen is light and can be carried by the wind over long distances. It is a potent allergen and can trigger symptoms such as sneezing, runny nose, itchy or watery eyes, and nasal congestion in individuals with ragweed allergies.

Timothy Grass Pollen: Timothy grass is a type of grass commonly found in pastures and meadows. Its pollen is a significant allergen and can cause hay fever symptoms in sensitive individuals. Symptoms may include sneezing, itching, nasal congestion, and watery eyes during the grass pollen season, which is typically in late spring and early summer.

Birch Pollen: Birch trees are widespread in many regions and produce large amounts of pollen that can cause allergic reactions. Birch pollen allergy is common in early spring when the trees release their pollen. Symptoms may include sneezing, nasal congestion, itchy throat, and watery eyes. Birch pollen can also cross-react with certain fruits and vegetables, leading to oral allergy syndrome in some individuals.