Fir trees are evergreen conifers belonging to the genus Abies. They are characterized by their needle-like leaves, which are typically flat and arranged in a spiral pattern. Fir trees can grow to be quite tall, with some species reaching heights of over 200 feet. They are commonly found in mountainous regions and are known for their conical shape, which helps shed snow and prevent branch breakage. These trees produce cones that hang down from their branches, and their wood is often used in construction and furniture making. Fir trees are also popular as Christmas trees due to their attractive appearance and pleasant scent. They provide habitat for various wildlife and play a crucial role in forest ecosystems.