Pine is a type of coniferous tree in the genus Pinus, with over 100 species found all over the world. The main sources of pine for commercial use are North America, Europe, and Asia. The pine tree is typically harvested in the winter when the sap is low, allowing for easier transportation and processing. Pines are commonly used for timber, construction, paper, and as a food source. Pine nuts, which are the seeds found inside pine cones, are also harvested for culinary use. The trees are grown on large plantations and can take 20-30 years to reach maturity, at which point they can be harvested for timber. As a food source, pine is commonly found in the form of pine nuts, pine pollen, and pine needles.