Pine needles are the long, slender leaves of pine trees, which belong to the Pinaceae family. They are typically green and can vary in length depending on the species of pine. Pine needles are known for their needle-like shape and are often grouped in clusters. They play a crucial role in photosynthesis, helping the tree to produce energy. In addition to their ecological importance, pine needles are also used in various applications. They can be used as mulch in gardens, providing nutrients to the soil as they decompose. Furthermore, pine needles are sometimes harvested for making essential oils and crafts, showcasing their versatility.