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10 Worst Plants for Your Allergies

Here's how to identify common allergy-causing plants and trees, and—hopefully—avoid them.

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Ryegrass

Where you’ll see it: Dry, cool lawns, meadows, pastures

There’s a ton in: Northern parts of the United States

Peak time: Spring and summer

Grasses as a whole are often problematic for allergy sufferers, says Dr. Filley. “There’s no allergy-free grass. And if you mow it, you pick up mold as well as pollen.” Other common allergens including timothy, blue, and orchard grasses.

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