Spring Allergies Make an Appointment Ask a Question Search Conditions This information has been reviewed and approved by David Tinkelman, MD (March 2013). Want to use this on your website? Fill out the content usage request form and then copy this code: Summary: Global Warming Making Spring Allergies Bloom Earlier Researchers say global warming is leading to larger plants and earlier and stronger pollination. Common Spring Allergies Tree and grass pollen Mold spores Dust mites & cockroaches Animal dander Springtime Allergen Facts In the U.S. and Canada, ragweed season is up to 27 days longer than before. 385 plan species in Europe are blooming earlier than ever. Allergic rhinitis generates more than 12 million doctor visits each year. 35 million Americans are allergic to pollen and mold. What You Can Do Start early on allergy medication - trees may bud early, so don't wait to take medicine Take antihistamines at night - their effectiveness peaks in the morning Nasal washes are a natural alternative - follow proper water prep guidelines More Information on Allergies Nasal Wash Allergy Overview Allergy Treatment Programs Pollen Count How Global Warming Is Making Allergies Worse Division of Pediatric Allergy & Clinical Immunology Division of Allergy & Clinical Immunology Find a Doctor You may use this infographic or our spring allergies infographic poster (pdf) with permission by completing our content usage request form.