Quercus robur 'fastigiata Koster' ; syn. Quercus robur 'Kosteri Fastigiata'
Oak Tree 'Koster'
Oak 'Koster' is a columnar shaped oak which becomes narrowly pyramidal with age. It is ideal for urban planting, especially when you have limited space. It is long-lived. Excellent choice for formal avenues, tall hedging or a garden focal point.
Contributed by @simplygarden
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Full sun to partial shade
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Occasional watering
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Full Frost Hardy: 5F (-15°C)
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Moist and free draining
Common name
Oak Tree 'Koster'
Latin name
Quercus robur 'fastigiata Koster' ; syn. Quercus robur 'Kosteri Fastigiata'
type
Tree
family
Fagaceae
ph
6.0 - 9.0 Acid - Neutral
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Light
Full sun to partial shade
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Frost
Full Frost Hardy: 5F (-15°C)
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Soil
Moist and free draining
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Water
Occasional watering
Plant & bloom calendar
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Best time to plant
full grown dimensions
8.00 M
15.00 M
Quercus robur 'fastigiata Koster' ; syn. Quercus robur 'Kosteri Fastigiata'
Oak 'Koster' is a columnar shaped oak which becomes narrowly pyramidal with age. It is ideal for urban planting, especially when you have limited space. It is long-lived. Excellent choice for formal avenues, tall hedging or a garden focal point.
Planting Outdoors Autumn
From Early Autumn TO Early Autumn
Young plants up to 4 ft high need no support but protection from wildlife. Plant in an open aspect in full sun to ensure the tree develops evenly and upright. Plant in early to mid Autumn, or in Spring
Planting Outdoors Spring
From Early Spring TO Mid Spring
Young plants up to 4 ft high need no support but protection from wildlife. Plant in an open aspect in full sun to ensure the tree develops evenly and upright. Plant in early to mid Autumn, or in Spring
Propagation
From Mid Winter TO Early Spring
Soak acorns in water, and let them stand in the water for 24 hours. Cold stratify for 60 days , or until the radicle emerges. Sow 1-2" deep, tamp the soil, mulch the seed bed. They can also be propagated by sowing in mulched beds. This is prefered to artificial stratification.
simplygarden
mattgt
mandycoy