Timothy Grass • Phleum pratense Grasses Conditions: Allergic rhinitis; allergic asthma; allergic conjunctivitis. Symptoms: Itchy, stuffy, or runny nose; post-nasal drip; sneezing; itchy, red or watery eyes; cough. Physical description: Can grow higher than 5 feet tall; has a cylindrical, spike-like purplish flower (cattail) that can grow 2-6 inches in length. Environmental factors: Found in … Continue reading Timothy Grass