Magnolia trees, known for their large, fragrant flowers, are native to both Asia and the Americas. In the United States, they are primarily found in the Southeast. This includes states such as Florida, Georgia, North Carolina, South Carolina, Tennessee, Texas, and Virginia. There are various species of magnolias and their specific ranges may vary.

Notable Magnolia Species and Their Locations

• Southern Magnolia (Magnolia grandiflora): This magnolia species is native to the southeastern United States and grows from Virginia to Florida and west to Texas.
• Sweetbay Magnolia (Magnolia virginiana): This magnolia is also native to the southeastern United States. When found in more northern states, it's typically in swampy areas.
• Umbrella Magnolia (Magnolia tripetala): This magnolia species grows in the Appalachian Mountains and in parts of the Midwest.

The ingestion of certain foods can contribute to cross-reactivity symptoms during a pollen allergy season like that of the Magnolia tree. This is due to the structure of proteins present in these foods being similar to pollen allergens, thereby triggering an immune response. This phenomenon is known as Oral Allergy Syndrome or Pollen-Food Allergy Syndrome.

Consider Avoiding These Foods

• Nuts and Seeds: Almonds, sunflower seeds, hazelnuts, and peanuts can sometimes exacerbate pollen allergy symptoms.
• Fruits: Specifically, apples, cherries, peaches, and pears might trigger cross-reactivity symptoms in some individuals.
• Vegetables: Certain vegetables like carrots, celery, and tomatoes have the potential to intensify magnolia pollen allergy symptoms.
• Spices: Certain spices resembling the allergens found in magnolia pollen such as anise, fennel, coriander, and parsley might also affect magnolia pollen allergies.

Although, individual reactions can vary significantly. Depending upon your sensitivity levels, you may not need to entirely eliminate these foods from your diet, but careful monitoring and slight reduction could help in managing symptoms. Always consult a registered dietitian or allergist for personalized advice.