Pecan

Almonds, Walnuts, Hazelnuts, Apples, Peaches, Pears, Cherries, Potatoes, Carrots, Celery

Pecan holds a unique place in Arizona, valued both as a productive nut tree and as a significant spring allergen. Pecan trees are native to North America and most prevalent in the southern United States, commonly grown in states including Texas, Oklahoma, Georgia, New Mexico, and Arizona. Arizona is home to several established pecan growing regions, particularly in Cochise County and parts of the Phoenix metro, where the trees are planted both commercially and as large shade trees in residential properties.

Peak time for pecan pollen release occurs from mid-March to late May, when it is spread widely by springtime winds, and the pollen produced by pecan trees ranks second only to ragweed as a source of severe allergies. This places pecan among the most potent allergens active in Arizona during the heart of spring, overlapping directly with the mulberry, ash, and oak surge that already dominates the Phoenix pollen calendar.

Pecan tree allergy is distinct from pecan nut allergy. Cross-reactivity with certain foods can cause oral allergy syndrome, an allergic reaction that causes the mouth and lips to tingle or itch when the immune system confuses proteins in certain foods with proteins in pollen. Not everyone with a pecan tree pollen allergy will develop a pecan nut allergy, and vice versa, since the allergenic proteins in the tree pollen are different from those in the nut, though if you have one type it is important to monitor for symptoms of the other.

Individuals with pecan pollen allergy may also experience pollen-food allergy syndrome, where consuming certain foods can worsen symptoms due to cross-reactivity between proteins in these foods and the pollen, particularly other tree nuts like almond and walnut, as well as fruits and vegetables including apples, peaches, pears, cherries, potatoes, celery, and carrots.

If your spring symptoms in Phoenix are unusually severe and you live near established pecan trees, pecan could be a significant and underrecognized factor. The team at Carefree Allergy can confirm your specific triggers through targeted testing and build a treatment plan tailored to your needs. Options range from medication management to long-term immunotherapy to reduce your sensitivity to pecan and the other major spring tree pollens active across Arizona each year.