Birch trees are prized for their outstanding bark characteristics and their graceful delicate foliage. Many birch tree variants have similarities in bark coloration and growth form, so cold-hardy variations will resemble their counterparts. Numerous species are used in landscapes in parks and yards, given that a healthy birch tree should be able to survive and thrive for 40-50 years. All birch trees have a susceptibility to pests, fungi and diseases that target birches and cut this lifespan by 20 years. Ensuring that your birches are regularly pruned and sprayed for these threats to their health keeps them thriving long past 20 years.