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Discover symptoms, causes, and treatment options for pine tree pollen allergy. Learn how to manage your reaction effectively.. What is Pine Pollen? Pine pollens are the powdery or grainy yellow substances released by male cones of Pine trees for reproduction. When pollens come in contact with female cones, it fertilizes the eggs, which develop into Pine tree seeds.

What causes yellow pollen? Yellow pollen is caused by the release of spores from coniferous trees. The common types of conifers that are found in North America are pine trees, including spruce, fir trees, larch and hemlock. Although the specific type of conifer varies by region, coniferous forests are found throughout the United States.. In North America, tree pollen seasons can start as early as February and extend into June, with pine pollen peaking later in the spring. Although this yellow pollen may visually dominate the landscape on warm, dry days—creating yellow clouds—the discomfort associated with allergies typically arises from finer, invisible pollen particles.