Quercus petraea 'Ryan' Fagaceae

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.
Характеристики
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Высота
25-30 m
Ширина
8-12m
Крона
broad pyramidal, half-open crown
Цветы
green-yellow, catkins, flowers in May
Плоды
brown
Колючки/шипы
None
Ядовитость
неядовитый, обычно
Вид почвы
loamy soil, sandy soil, calcareous soil
Мощение
неустойчив к мощению
Зона зимостойкости
5 (-28,8 до -23,4 °C)
Устойчивость к ветру
good
Прочие виды устойчивости
устойчив к морозам, зона 1 - 6, cустойчив к ветру, устойчив к соли для улиц
Применение
аллеи и широкие улицы, промышленные зоны
Форма
штамбовое дерево
Происхождение
Tree nursery Van Tienen-Van der Hulst, Mill, Netherlands, 2005
штамбовое дерево известковые почвы суглинок песчаные почвы неустойчив к мощению устойчив к соли для улиц устойчив к морозам (зона 1 - 6) устойчив к ветру широкая конусообразная форма 3 высота: менее 6 метров крона средней плотности зеленый желто-зеленый среднерастущий неядовитый (обычно)
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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 среднерастущий 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 май.
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