Oregon is known as the “Grass Seed Capital of the World.” With nearly 1,500 farms in the state, Oregon is a major world producer. But pollen -- including from grass -- in the Willamette Valley leads to Oregonians suffering from allergies through the summer. We dig into the details of this year’s allergy season with Shyam Joshi, an assistant professor of medicine and head of allergy and clinical immunology in the OHSU School of Medicine.