Because they aren’t native or simply the fittest for the local or city environment, some tree types are more likely to give you problems than others. If you have these in your yard or even near your home, consider calling Tree Removal Calgary to have a look:    Norway Maple: The shallow roots of this invasive tree species make it difficult for surrounding plants to continue growing, thus killing off native saplings. The shallow system also makes it vulnerable to extreme weather- it’s much likelier than other species to drop large branches. Silver Maple: These fast-growing trees often have over-extended limbs making them weak and dangerous. Because they’re often used as decoration, they don’t have the wind protection they would have in a forest or natural location making them especially vulnerable to falling during storms.  Siberian Elm: This is another tree that grows so quickly it's almost like a weed. It’s often planted on city streets and can be found all over Calgary, Alberta, Canada. Like the maples, this makes it vulnerable to over-extended limbs and an overall weak structure.