Quercus robur ‘Fastigiata Koster’ is an ornamental selection of Quercus robur, characterized by a very narrow and vertical columnar habit, ideal for tree-lined avenues, small urban spaces, and architectural gardens. The ‘Koster’ cultivar stands out for its naturally compact and upright shape, which it maintains even at maturity without the need for drastic pruning.

The tree reaches an average height of 10–15 meters and a compact width of 3–4 meters, making it perfect for planting in rows along roads, parking lots, or courtyards.

The growth is slow to moderate, which allows for easier control of height and structure over time, making it ideal for use in contemporary landscaping projects.

The leaves are deciduous, a glossy dark green, and have a lobed edge. In autumn, they turn yellow-bronze before falling, providing seasonal interest and aesthetic value. The spring flowering is modest and followed by a limited production of acorns, which reduces fruit drop and the need for cleanup in public spaces.

Quercus robur ‘Fastigiata Koster’ is hardy and robust: it withstands temperatures down to -25°C, tolerates winds and urban pollution, and adapts to various soil types, provided they are well-drained and deep. In the early years after planting, it may benefit from summer irrigation, but once established, it is self-sufficient even in conditions of moderate drought.

→ If you love the vertical elegance of Quercus robur ‘Fastigiata Koster,’ discover the Carpinus betulus ‘Fastigiata’, ideal for columnar compositions