
POLLINATION TIMES OF MOST PLANTS
TREES
MARCH: Alder, Box Elder, Elm, Hazelnut, Maple, Red Cedar
APRIL: Birch, Cottonwood, Hackberry, Maple, Mulberry, Sweet Gum, Sycamore, Willow
MAY: Ash, Beech, Hickory, Linden, Mulberry, Oak, Pecan, Pine, Privit, Sweet Gum, Sycamore, Walnut
JUNE: Linden, Oak, Pine
GRASSES
MAY- JUNE: Timothy, Orchard, Kentucky Bluegrss, Red Tops, Sweet Vernal, Meadow
Fescue, Perennial Rye
MAY-JULY: Bermuda, Brome, Velvet, Johnson, Bahia, Canary
WEEDS
MAY-JULY: English Plantain, Sheep Sorrel, Yellow Dock
AUG-OCT: Ragweed, Lambs Quarters, Cocklebur, Marsh Elder, Fireweed, Mugwaort, Russian Thistle, Pigweed

Pollen Control Measures
- KEEP WINDOWS AND DOORS SHUT AND RUN AIR CONDITIONER AT ALL TIMES. THIS KEEPS THE OUTDOORS AIR OUTSIDE.
- KEEP WINDOWS CLOSED WHILE IN THE CAR AND AIR CONDITIONER ON THE “RE-CIRCULATE” MODE.
- WASH YOUR HAIR BEFORE GOING TO BED AT NIGHT TO REDUCE EXPOSURE DURING SLEEP.
- KEEP PETS OUTDOORS TO PREVENT THE POLLEN FROM BEING BROUGHT IN ON THEIR HAIR.
- AVOID HANGING CLOTHES AND LINENS OUTSIDE AS POLLENS MAY COLLECT ON THE ITEMS.
- DON’T MOW THE LAWN IF YOU ARE ALLERGIC TO GRASS OR WEEDS. IF YOU MUST MOW THE GRASS, WEAR A FACE MASK.
Cincinnati Allergy & Asthma Center
October 2016
Source: Vivacare
Last updated : 2/10/2023