With the possibilities of global warming as well as with increasing temperature, alder is one of such species of trees' which is going to flourish. The average alder is valuable to wildlife throughout the year and the seeds are a beneficial winter food for birds. The average alder has become the most widespread in our nation. Their pollen is quite a common allergen. Whenever these pollen come in touch with the people passing by or those working in the grasslands, cause allergies inside them. More than a few people are allergic to pollen from specific plants while some are allergic to pollen from several plants. Pollen is only one of many airborne particles in our environment. Mostly the pollen will be settling down to your clothes while you will be outside, and while returning you will be bringing such home causing allergic measure to your near and dear one's. Although you can't avoid tree pollen, there are a few things you can do in order to lessen exposure.