Causes Of Tree Pollen Allergy

Of the 50 000 different trees, less than 100 have been shown to cause allergies. Most allergies are specific to a type of wood or a man of cultivation techniques, some trees, such as:

Catalpa

Elm

Hickory

Olive

Pecans

Maple

Walnut.

The female version of these species are completely pollen-free:

Ash

Box Elder

Cottonwood

Date palm

Maple (red)

Maple (silver)

Phoenix Palm

Poplar

Willow.

Some people do not seem to cross-reactions among the trees of alder, beech, birch and oak family and juniper and cedar family.