What is Ulmus davidiana root extract?
A nice plant extract that’s used as a traditional oriental medicine in China and Korea. The main components of the extract are water-binding sugars, namely rhamnose, galactose, and glucose.
What tree is Ulmus?
Elms are deciduous and semi-deciduous trees comprising the flowering plant genus Ulmus in the plant family Ulmaceae. The genus first appeared in the Miocene geological period about 20 million years ago, originating in what is now central Asia.
What is a Japanese elm tree?
The Japanese elm tree (Ulmus davidiana var. japonica) is a deciduous tree that will grow rapidly when it is young, slowing down as it matures and ending up just a touch smaller than American elms. Japanese elms are lovely in the autumn, with red, bronze and yellow leaves.
Can elms survive Dutch elm disease?
Tolerant cultivars are not immune to the disease and may develop wilt if infected. Unlike susceptible trees, tolerant elms can block the spread of the pathogen and will not be killed.
Are there any Dutch elm trees left?
When Dutch elm disease swept through southern Britain in the 1960s and 70s, over 90% of elms were lost; an estimated 25 million trees. The disease, which is caused by a rogue fungus, is still present in the countryside, and spreading north, though it has not yet reached parts of Scotland.
How tall does a Japanese elm grow?
The Japanese Elm or Zelkova is a medium to large sized deciduous tree that can grow up to 12m tall and 10m wide. It is perfect for avenues and has stunning Autumn colours of yellow, copper, bronze and red. Japanese Zelkova is an extremely hardy tree and prefers full sun but will tolerate any conditions.
How fast does a Japanese elm grow?
Height & Spread: Up to 30 feet tall and may be wider than tall. Dwarf varieties grow no more than 3 or 4 feet high. Hardiness: USA Zones 5 to 8. Growth Rate: Fairly slow, about a foot per year.
Is elm harder than oak?
Soft elms are moderately hard to dry; harder than hard maple, but slightly easier than oak. The mild drying schedules result in slightly more warp, so stacking must be perfect.