Sagebrush is a common allergen that can make autumn miserable for allergic individuals in dry or mountainous regions. It is a shrub-like weed that is native to western North America, and it generates large amounts of pollen in the late summer and early fall months. August and September are usually the worst allergy months for these plants, but their season can last from early July through the end of October and varies depending on the elevation of the region.
Sagebrush pollen is most prevalent July through October.
Sagebrush pollen is very small, and can be carried for several miles on the wind. Sagebrush is prevalent in Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Washington, and Wyoming. It is the leading cause of hay fever (pollinosis) after ragweed and grass allergens. Sagebrush is different from Sage (Salvia), which is an herb; having a Sagebrush pollen allergy does not mean you are allergic to Sage.
It’s important to note that other weeds, like Ragweed, Lambquarters, Russian Thistle (Tumbleweed), and Kochia (Burning Brush) are also present during this time of year, so allergy sufferers should consider taking an allergy test to determine exactly which plants may be the cause of their allergies.