Pinus hartwegii, commonly known as Hartweg’s Pine, is an evergreen tree native to high-altitude environments such as alpine and subalpine zones in Mexico and Central America, where it is often found on dry, exposed ridges and slopes. It is one of the highest-elevation pines in the world, capable of growing at altitudes up to 4,000 meters. Hartweg’s Pine typically reaches 20–30 meters (66–98 ft) in height, with a broad, rounded crown that provides habitat for various mountain wildlife. The bark is thick, dark grey-brown, and scaly or fissured, offering a textured appearance. The cones are ovoid, 6–13 cm long, black or very dark purple, maturing in spring to open to 5–7 cm broad, releasing seeds that are dispersed by wind.

Hartweg’s Pine is valued for its ability to thrive in harsh, high-altitude conditions, making it an excellent choice for reforestation projects and ecological restoration in suitable climates. It is also used for timber and as an ornamental tree in large gardens and parks, where its striking dark cones and rugged bark can be appreciated. This species requires minimal maintenance once established, as it is adapted to low water availability and nutrient-poor soils. It prefers full sun exposure and well-drained soils, and it is tolerant of cold temperatures and wind. However, gardeners should be aware that this tree can be susceptible to pine beetle infestations and fungal diseases, especially in stressed conditions.CC BY-SA 4.0