A medium-size tree with an initially ascending, pyramidal crown and a good upright central leader. Mature trees have an oval crown and grow to a height of 6 to 10 m. The grey-green bark is smooth. The relatively small leaf is oval to elongated-ovate and glossy dark green. In autumn it turns an attractive red to dark wine red. Unlike many other Elms, ‘Frontier’ blossoms in September and not in spring. The tree originated as a hybrid between Ulmus minor and Ulmus parvifolia. The latter is an Asian species that is evergreen in milder climates. Ulmus parvifolia naturally has a very strong resistance to Dutch elm disease. To a certain extent, ‘Frontier’ has inherited this resistance. Its oval crown shape makes it suitable as an avenue tree or street tree.
устойчив к влажным почвам, устойчив к коротким наводнениям
Мощение
устойчив к мощению
Зона зимостойкости
5 (-28,8 до -23,4 °C)
Устойчивость к ветру
fairly to good
Прочие виды устойчивости
устойчив к морозам, зона 1 - 6, cустойчив к ветру
Применение
аллеи и широкие улицы
Форма
штамбовое дерево
Происхождение
U.S. National Arboretum, Washington DC, USA, 1990
штамбовое деревоизвестковые почвысуглинокбедные почвыторфяные почвыпесчаные почвыустойчив к мощениюустойчив к морозам (зона 1 - 6)устойчив к влажным почвамустойчив к коротким наводнениямустойчив к ветруовальная 2 высота: от 6 до 12 метровкрона средней плотностизеленыйзеленыйсреднерастущийпривлекательный осенний окраснеядовитый (обычно)дерево будущего
Ulmus 'Frontier' can eventually reach a height of 6 - 10 m, depending on the site and climate conditions.
Ulmus 'Frontier' is среднерастущий and can eventually reach a height of 6 - 10 m, depending on the site and climate conditions.
The leaves of Ulmus 'Frontier' turn красный in autumn.
The right time to plant Ulmus 'Frontier' is during the dormancy period. In Western Europe, Ulmus 'Frontier' 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.