WhatAreAllergies.comMedical Reference Hub
WA

Written & reviewed by WhatAreAllergies Editorial Team

Editorial Review

Health Editors & Medical Writers · Allergy, Immunology & Clinical Health Content

WhatAreAllergies.com

Updated May 2026·Annual review cycle

Our editorial process: All content on WhatAreAllergies.com is written and reviewed by our editorial team following published guidelines from ACAAI, AAAAI, WAO, and ARIA. Content is updated annually or when major guidelines change. This content is educational only — not a substitute for professional medical advice. We do not accept advertising influence on editorial content. Read our editorial policy →

This article is part of our Seasonal Allergies resource center, covering all aspects of seasonal allergies diagnosis, treatment, and management.

Wind vs. Insect Pollinated

Plants that rely on the wind to distribute their pollen are the primary culprits for allergies. Their pollen is lightweight, buoyant, and produced in massive quantities. Brightly colored flowers pollinated by insects rarely cause allergies.

Pollen TypePeak Season
Tree PollenEarly Spring (March - May)
Grass PollenLate Spring/Summer (May - July)
Weed Pollen (Ragweed)Late Summer/Fall (August - First Frost)

Continue Reading

Continue Reading

More medically reviewed guides in this topic area

Topic Hub

Seasonal Allergies — All Articles

About the Medical Team

WA
Medical Review

WhatAreAllergies Editorial Team,

Health Editors & Medical Writers

Allergy, Immunology & Clinical Health Content

WhatAreAllergies.com
WA
Written by

WhatAreAllergies Editorial Team,

Health Content Editor

Clinical Allergy & Immunology Content

WhatAreAllergies.com

Content is written by our editorial team following current clinical guidelines from ACAAI, AAAAI, and WAO. Educational only — always consult a qualified healthcare provider for medical advice. View editorial policy →

Medical References & Citations

  1. 1
    database2024

    U.S. Environmental Protection Agency (EPA) "Indoor Air Quality and Allergens" — EPA Indoor Air Quality Program.

    View source
  2. 2
    database2024

    Centers for Disease Control and Prevention (CDC) "FastStats — Allergies and Hay Fever" — National Center for Health Statistics.

    View source
  3. 3
    guideline2024

    American Academy of Allergy, Asthma & Immunology (AAAAI) "Allergy Overview" — AAAAI Patient Education.

    View source
  4. 4
    guideline2024

    American College of Allergy, Asthma & Immunology (ACAAI) "Allergy Types and Causes" — ACAAI Patient Resources.

    View source

This content reflects clinical guidelines current as of the last review date shown above. Always consult a qualified healthcare provider for personalized medical advice.