Quercus robur 'Fastigiate Koster' - HO 4-6 CM CONT FTH.

Description
The Cypress oak 'Fastigiata Koster' (Quercus robur) is a columnar, slender tree with decorative, light green, oval fruits. These are small. It produces light green flowers arranged in catkins from April to May. The Cypress oak 'Fastigiata Koster' also bears leathery, egg-shaped, dark green leaves with a medium green colour. In a sunny to semi-shady location with well-drained, nutrient-rich soil, it usually reaches a height of around 20 metres and grows to a width of around 5 metres.

Synonym
Synonyms (botanical): Quercus pedunculata.

Bulletpoints
* Fruiting ornament * attractive orange-yellow autumn colouring * tolerates pruning * resistant to urban climates, wind-resistant, smoke-hardy, heat-loving, flood-tolerant, can be built over

leaves
The deciduous leaves of Cypress oak 'Fastigiata Koster' are dark green, medium green, ovate, leathery, alternate, lobed. They are about 10 - 15 cm in size. Cypress oak 'Fastigiata Koster' is bright orange-yellow in autumn.

Bark
Dark grey, deeply fissured, longitudinally furrowed bark makes this plant an eye-catcher in any garden.

Spread
Central Europe.

Frost hardiness
The Cypress oak 'Fastigiata Koster' has good frost hardiness.

Growth
Columnar, slender.

Water
The plant has a medium water requirement.

Pruning
This plant is tolerant of pruning.

Location
Preferred location in a sunny to semi-shady position.

Soil
Normal soil.

Planting time
Container plants can be planted all year round, except when the soil is frozen and in summer heat (over 30°C).

Care
Cut and saw wounds as well as broken branches should be treated with a wound sealant as soon as possible to prevent pathogens from entering the plant.

Flower
The light green flowers of Cypress oak 'Fastigiata Koster' appear in catkins from April to May.

Fruit
The light green, oval fruits of Quercus robur 'Fastigiata Koster' are particularly decorative. They appear in September and are small.

Use
Solitary, ornamental shrub, landscape, green border

Root
Quercus robur 'Fastigiata Koster' is a deep-rooting plant and, depending on the soil, forms densely branched roots.