Europe

Allergy-inducing plants in Europe can be divided into five main areas:

• Northern Birch, grasses
• Central Deciduous forest trees, birch, grasses
• Eastern Grasses, mugwort, ragweed
• Mountainous Grasses, trees
• Mediterranean Grasses, Parietaria, olive, cypress

Grass pollen is the most important allergen in Europe. As the cross-reactivity is extremely high amongst nearly all grasses, for the grass-pollen sensitive patient it makes no difference, which grass pollen she/he inhales. Only the pollen of cultivated rye has a higher allergen  than the pollen of wild grasses. In fact, the high meadow grasses like orchard grass or rye cause the majority of symptoms.