Betula delavayi subsp. potaninii – Betula delavayi subsp. potaninii

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Betulaceae

Betula delavayi subsp. potaninii – Betula delavayi subsp. potaninii

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In the wild this tree grows, at a height of up to 3000 m, in rocky mountain soils in West China. There it is a wide shrub and low spreading. In cultivation it is grown as a standard tree with a wide pyramidal crown and a height of circa 7 - 8 m. The bark and twigs are dark grey. Young twigs are brown with soft hairs. The leaf is oval and has many, 10 to 20, vein pairs, this is an important feature of this tree. The inflorescence and the fruit set strongly resemble that of B. utilis subsp. jaquemontii. The tree roots shallow and takes root easily in rocky soil. Very useful in locations where the soil contains many pebbles or stones. It is a rather unknown plant which is also relatively rare in cultivation.

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Specifications
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Height
circa 3 m, grafted on a stem: 7 - 8 m
Width
4-6m
Crown
wide pyramidal, half-open crown
Bark and branches
bark dark grey, rough, twigs brown hairy
Leaf
oval, very many veins, green, 2 - 4 cm
Autumn colour
yellow
Flowers
catkins, yellow green
Fruits
fruit catkins, circa 2 cm long and 1 cm thick, pendent
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
can be used in rocky soil
Paving
tolerates partial paving
Winter hardiness zone
5a (-28,8 to -26,1 °C)
Wind resistance
good
Other resistances
resistant to frost (WH 1 - 6), can withstand wind
Shape
clearstem tree
Origin
West China
Synonyms
Betula potaninii
Clear stem tree acid soil calcareous soil loamy soil peaty soil sandy soil tolerates partial paving light-loving resistant to frost (WH 1 - 6) can withstand wind broad conical 2nd size, between 6 and 12 metres half-open crown green orange/red yellow early sprout average growing Attractive autumn colour non-toxic (usually)
Frequently asked questions
Betula delavayi subsp. potaninii

Betula delavayi subsp. potaninii can eventually reach a height of circa 3 m, grafted on a stem: 7 - 8 m, depending on the site and climate conditions.

Betula delavayi subsp. potaninii is average growing and can eventually reach a height of circa 3 m, grafted on a stem: 7 - 8 m, depending on the site and climate conditions.

The leaves of Betula delavayi subsp. potaninii turn yellow in autumn.

The right time to plant Betula delavayi subsp. potaninii is during the dormancy period. In Western Europe, Betula delavayi subsp. potaninii 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.

Betula delavayi subsp. potaninii blooms in march.
General