Ulmus 'Clusius' – Ulmus 'Clusius'

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Ulmaceae

Ulmus 'Clusius' – Ulmus 'Clusius'

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Elm with strong ascending growth, at first columnar but later oval. Forms a clear main trunk. The tree has a dense crown which forks easily. The young tree has a trunk that is smooth and silver-grey: later it develops black grooves. Old trunks have a network of grooves. Young twigs are brown, slightly hairy and have lenticels. Later they become bare and greyish-brown. The leaves are larger than those of 'Lobel' and they turn yellow in the autumn. Is very resistant to (sea) wind and shows good resistance to disease. Studies have shown that 'Clusius' is reasonably resistant to Dutch elm disease. This elm is suitable for urban areas as also at sites where there is a great deal of wind.
Size
Root ball size
Packaging
Amount
Delivery period
900/1000h, multistem with raised stems
Wire rootballed
Available from november! Pre-order now!
Root ball size
Packaging
Wire rootballed
Delivery period
Available from november! Pre-order now!
Stock
Limited stock
1000/1200H meerstammig opgeknipt
Wire rootballed
Available from november! Pre-order now!
Root ball size
Packaging
Wire rootballed
Delivery period
Available from november! Pre-order now!
Stock
Limited stock
Specifications
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Height
15 - 18 m
Width
6-8m
Crown
oval, half-open crown
Bark and branches
smooth, silver-grey, later dark grey with black grooves, twigs brown
Leaf
ovoid to broad elliptical, dark matt green, 8 - 12 cm
Autumn colour
yellow
Flowers
grouped in fours in small stalked bundles, light green, March/April
Fruits
flat winged nutlets, round to elliptical, brown
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
moist and light, favours calcareous soils
Soil moisture
suitable for wet soil, withstand short flood
Paving
tolerates paving
Winter hardiness zone
5 (-28,8 to -23,4 °C)
Wind resistance
good, resistant to sea wind
Other resistances
resistant to frost (WH 1 - 6), can withstand wind
Application
avenues and broad streets, coastal areas, industrial areas
Shape
clearstem tree, multi-stem treem
Origin
De Dorschkamp, Wageningen, Netherlands, 1960
Clear stem tree Multi-stem tree calcareous soil clay soil loamy soil sandy soil tolerates paving resistant to frost (WH 1 - 6) suitable for wet soil withstand short flood can withstand wind oval 1st size , taller than 12 metres half-open crown green green average growing Attractive autumn colour non-toxic (usually)
Frequently asked questions
Ulmus 'Clusius'

Ulmus 'Clusius' can eventually reach a height of 15 - 18 m, depending on the site and climate conditions.

Ulmus 'Clusius' is average growing and can eventually reach a height of 15 - 18 m, depending on the site and climate conditions.

The leaves of Ulmus 'Clusius' turn yellow in autumn.

The right time to plant Ulmus 'Clusius' is during the dormancy period. In Western Europe, Ulmus 'Clusius' 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.

Ulmus 'Clusius' blooms in march.
General