


Native to the Mediterranean region, the Quercus suber, known as the cork oak, is one of the most iconic tree species of Portugal and a favourite in the bonsai world for its strength and distinctive bark texture. Its thick, rugged cork bark and dark green glossy leaves give the bonsai a striking and characterful appearance. It is a slow-growing but extremely hardy and long-lived species, ideal for bonsai enthusiasts who appreciate trees with presence and personality.
Sunlight: Prefers full sun. The cork oak requires good sunlight exposure to maintain vigour and balanced growth.
Watering: Keep the soil slightly moist but avoid overwatering. Quercus suber is drought-tolerant but dislikes waterlogged soil. Use a well-draining substrate.
Humidity: Prefers moderate humidity. Avoid overly humid or poorly ventilated environments.
Pruning: Prune branches in late winter or early spring to shape the tree. Avoid heavy pruning, as the cork oak recovers slowly.
Fertilization: Fertilize during spring and summer with a balanced fertilizer, reducing in autumn and avoiding in winter.
Repotting: Repot every 3–4 years, preferably in spring, using a well-draining soil mix suitable for Mediterranean trees.
Flowering: The Quercus suber does not produce showy flowers but may form small acorns. The bark texture and trunk form are the most striking features of this bonsai.
Data sheet