Holly trees, commonly referred to as American holly or English holly, are predominantly found in the Southern and Eastern regions of the United States. Some examples of these regions include states such as North Carolina, Maryland, Delaware, Alabama, Florida, and various others along the Atlantic and Gulf Coast. Holly trees grow in both wet and dry habitats such as swamps, low woods, maritime forests, and dune ridges. Therefore, individuals residing in or traveling to these areas may be exposed to holly pollen.

Holly Pollen in the Western US

Although not as common, certain species of holly trees can also be found in the Western USA. For instance, Oregon holly grows in the Pacific Northwest, including areas of Oregon, Washington, Idaho, and Northern California.

If you suffer from Holly pollen allergy, it's important to avoid certain foods that can worsen your symptoms due to a medical phenomenon known as Oral Allergy Syndrome (OAS), also known as pollen-food syndrome. This condition results from cross-reactions between certain pollens and certain raw fruits, vegetables, and nuts.

Foods to Avoid if You're Allergic to Holly Pollen

• Raw Apples: Chinquapin pollen, which is a type of holly pollen, is associated with apple allergies. Consuming raw apples might intensify your allergic reaction.
• Carrots: Certain proteins in carrots may trigger an allergic response in those who have a holly pollen allergy.
• Cherries: As with apples, cherries can provoke a more severe allergic response in those individuals who are allergic to holly pollen.
• Hazelnuts and Almonds: Holly pollen and these types of nuts share similar proteins, which can exacerbate allergy symptoms.
• Certain Spices: Some spices, such as aniseed, caraway, coriander, fennel and parsley can worsen holly pollen allergies.

Please bear in mind that every person reacts differently, and this is not an exhaustive list. In case of severe allergic reactions, always consult with your doctor to establish a personalized allergy plan.