Tree pollen season typically ends by late spring or early summer, around May to June, but this can vary depending on your region. In some areas with milder climates, tree pollen may continue into June or even July. For example, in North Carolina, the tree pollen season runs from February through the end of May, with the peak at the end of March through early April before tapering off. In Canada, tree pollen counts remain high until July when pine pollen season ends. Generally, after tree pollen declines, grass and then weed pollen become the dominant allergens later in the year.
So, you can expect tree pollen season to end mostly between May and July depending on your location.
