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ST. LOUIS, MO (KTVI)– Experts say this year’s allergy season is expected to be very bad thanks to old man winter.

Snow storms and lingering sub-zero temperatures caused trees to bloom late. Usually they produce allergens gradually with oak, maple, and elm trees blooming in March and ragweed and grass in April. With spring getting a late start, trees and shrubs could bloom all at once.

Some people living with allergies are already miserable. Dee Merseal has classic symptoms.

“I have itchy watery eyes, sneezing tired, coughing, and burning in the throat,” said Merseal.

Physicians like Dr. Elyra Figueroa with SSM encourage allergy sufferers to take their medicine, keep windows and doors closed to keep pollen out of their homes, and to exercise during evening hours as the pollen count is highest during early morning hours.