There’s a new strain of ragweed lurking in Canada, and herbicides don’t stand a chance with it.
Study finds you might develop symptoms earlier than others also allergic to ragweed.
How did the dastardly king of hay fever become so potent and so widespread?
All about the cursed weed, and how to beat its pollen.
Grass allergy is one of the most common pollen allergies, up there with the birch tree and ragweed.