A large tree with regular round crown. In nature, the tree can reach a height of over 30 m, but in culture it is rarely taller than around 24 m. The young twigs are strikingly brown-red. The old bark is dark grey and slightly grooved with small flat plates. Very variable leaf shape, from obovate to narrow elongated, depending on its age. The leaf margins vary from smooth-edged to 3-5 lobed, the lobes being on the upper half of the leaf. The glossy green leaf gives the tree a healthy appearance. The broad-oval acorns are 1 to 1.5 cm long and the same width. They are only enclosed by the cupule at their base. The cupule is covered in reddish-brown scales with felt-like hair. Q. nigra is semi-evergreen but usually deciduous in North-West Europe. The tree can tolerate a lot of warmth and likes a fairly moist but well-drained, fertile soil.
obovate to narrow elongated, smooth-edged to shallow-lobed, glossy green, 5 - 11 cm
Цветы
golden yellow ♂ catkin, May
Плоды
broad oval, 1 - 1.5 cm, in ones and twos, cupule with felt-like, hairy reddish-brown scales
Колючки/шипы
None
Ядовитость
неядовитый, обычно
Вид почвы
few requirements
Влажность почвы
устойчив к влажным почвам
Мощение
неустойчив к мощению
Зона зимостойкости
6 (-23,3 до -17,8 °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, многоствольное дерево
Происхождение
South East USA
штамбовое деревомногоствольное деревоизвестковые почвысуглинокторфяные почвыпесчаные почвынеустойчив к мощениюустойчив к соли для улицустойчив к морозам (зона 1 - 6)устойчив к влажным почвамустойчив к ветру1 высота: более 12 метровкрона средней плотностизеленыйжелтыйсреднерастущийнеядовитый (обычно)
Quercus nigra can eventually reach a height of 15 - 20 m, depending on the site and climate conditions.
Quercus nigra is среднерастущий and can eventually reach a height of 15 - 20 m, depending on the site and climate conditions.
The right time to plant Quercus nigra is during the dormancy period. In Western Europe, Quercus nigra 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.