IN PICTURES: six plants hayfever sufferers should avoid

Chrysanthemums, sunflowers and oak trees have been named as some of the worst plants that trigger hay fever allergies.
Big pollen producer, chrysanthemums help stretch the allergy season from spring, throughout summer and well into autumn too.Big pollen producer, chrysanthemums help stretch the allergy season from spring, throughout summer and well into autumn too.
Big pollen producer, chrysanthemums help stretch the allergy season from spring, throughout summer and well into autumn too.

A team of outdoors experts from BillyOh.com have revealed six plants that produce huge numbers of airborne pollen grains which play havoc with allergies over the warmer months.