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If I'm allergic to pollen, what foods might trigger a reaction?

Clifford W. Bassett, MD
Allergy & Immunology
About one third to one half of patients with seasonal allergies show sensitivity to the following foods that can cross-react with some pollens.

Cross reactors of alder tree pollen:
  • almonds
  • apples
  • celery
  • cherries
  • hazel nuts
  • peaches
  • pears
  • parsley
Cross reactors of birch tree pollen:
  • almonds
  • apples
  • apricots
  • carrots
  • celery
  • cherries
  • coriander
  • fennel
  • kiwifruit
  • nectarines
  • parsley
  • parsnips
  • peaches
  • pears
  • peppers
  • plums
  • potatoes
  • prunes
  • soy
  • wheat
  • Potential: hazel nuts and walnuts
Cross reactors of grass pollens:
  • melons
  • tomatoes
  • oranges
Cross reactors of mugwort and weed pollens:
  • carrots
  • celery
  • coriander
  • fennel
  • parsley
  • peppers
  • sunflower
However, it should be noted that reaction to one or more foods in any given category does not necessarily mean a person is allergic to all foods in that group. Often well-cooked, canned, or frozen food offenders cause no reaction.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.