Pinus halepensis is a small to medium-size tree, 15–25 metres (49–82 ft) tall, with a trunk diameter of up to 60 centimetres (24 in), exceptionally up to 1 m (3 ft 3 in). The bark is orange-red, thick and deeply fissured at the base of the trunk, and thin and flaky in the upper crown. The leaves ("needles") are very slender, 6–12 cm (2.4–4.7 in) long, distinctly yellowish green and produced in pairs (rarely a few in threes). The cones are narrow conic, 5–12 cm (2.0–4.7 in) long and 2–3 cm (0.79–1.2 in) broad at the base when closed, green at first, ripening glossy red-brown when 24 months old. They open slowly over the next few years, a process quickened if they are exposed to heat such as in forest fires. The cones open 5–8 cm (2.0–3.1 in) wide to allow the seeds to disperse. The seeds are 5–6 mm (0.20–0.24 in) long, with a 20 mm (0.79 in) wing, and are wind-dispersed.