From mid-February to the end of March, copious amounts of Arizona’s most allergenic pollen billow out from juniper trees. Junipers are to the Southwest what fir trees are to the Northwest: widespread and represented by several species. While junipers define the landscape on the Colorado Plateau with their glacial growth, half-dead/half-alive appearance and fragrant aroma, they are THE GREATEST trigger of allergic reactions in winter. Although junipers are found from sea level to 10,000 feet … [Read more...] about Juniper Tree Pollen: The Most Allergenic Pollen in Northern Arizona