Quercus petraea 'Ryan' – Quercus ×rosacea 'Ryan'

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Fagaceae

Quercus petraea 'Ryan' – Quercus ×rosacea 'Ryan'

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Quercus petraea 'Ryan' is the scientific name for the hybrids between Q. petraea and Q. robur. 'Ryan' is a moderately strong-growing tree with a broad pyramidal crown. This is also one of the main differences from the species Q. petraea and Q. robur, which both have a round to very wide crown. 'Ryan' forms a good continuous central branch and fairly ascending upright supporting branches, giving the crown its regular shape. The leaves are oval to inverted ovoid and regularly lobed. It is dark green and remains green longer than Q. petraea and Q. robur in autumn, before (often) withering on the tree in winter. The leaves seem better mildew resistant.
'Ryan' was found by nursery Van Tienen-Van der Hulst of Mill. The tree originated as a seedling of Q. ×rosacea 'Columna' and was introduced in 2005. Its narrower form makes 'Ryan' more suitable as avenue tree in greenbelts and parks. Hardiness zone 5.
Availability
Clear stem (5)
Specifications
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Height
25-30 m
Width
8-12m
Crown
broad pyramidal, half-open crown
Flowers
green-yellow, catkins, flowers in May
Fruits
brown
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
loamy soil, sandy soil, calcareous soil
Paving
tolerates no paving
Winter hardiness zone
5 (-28,8 to -23,4 °C)
Wind resistance
good
Other resistances
resistant to frost (WH 1 - 6), can withstand wind, resistant to de-icing salt
Application
avenues and broad streets, industrial areas
Shape
clearstem tree
Origin
Tree nursery Van Tienen-Van der Hulst, Mill, Netherlands, 2005
Clear stem tree calcareous soil loamy soil sandy soil tolerates no paving resistant to de-icing salt resistant to frost (WH 1 - 6) can withstand wind broad conical 3rd size, smaller than 6 metres half-open crown green yellowgreen average growing non-toxic (usually)
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Frequently asked questions
Quercus petraea 'Ryan'

Quercus petraea 'Ryan' can eventually reach a height of 25-30 m, depending on the site and climate conditions.

Quercus petraea 'Ryan' is average growing and can eventually reach a height of 25-30 m, depending on the site and climate conditions.

The right time to plant Quercus petraea 'Ryan' is during the dormancy period. In Western Europe, Quercus petraea 'Ryan' with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.

Quercus petraea 'Ryan' blooms in may.
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