In its original habitat C. glabra is an imposing tree growing to a height of approx. 30 m: when cultured it is usually somewhat smaller. Old trees are valued for their tough durable wood. The crown is irregularly oval. Young trees have smooth grey bark. In older specimens the bark is dark brown and has a network of grooves. Young branches are very pendulous. The leaves are imparipinnate and consist of 5 to 7 narrow leaf segments. These are lanceolate to narrowly obovate. The leaves are somewhat brown tinted when they first appear but are light green in the summer. In the autumn the leaves turn colour to a golden yellow. The pear-shaped bitter nuts are light brown with a smooth shell. The nuts only partially open when they ripen. The first nuts do not appear until after approx. 25 years. The tree has a deep root system.
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trunk smooth and grey, later dark brown and with a network of grooves
Leaf
imparipinnate, glossy light green, 10 - 17 cm, feathered leaf
Autumn colour
yellow
Flowers
♂ catkins approx. 6 cm, ♀ flowers in terminal ears, May
Fruits
pear-shaped nut, approx. 2.5 - 3.5 cm, edible fruits
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
rich, well-drained soil
Paving
tolerates no paving
Winter hardiness zone
5b (-26,0 to -23,4 °C)
Wind resistance
good
Other resistances
resistant to frost (WH 1 - 6), can withstand wind
Fauna tree
valuable for bees (honey plant)
Shape
clearstem tree
Origin
north-east of the United States
Clear stem treeacid soilclay soilloamy soilsandy soiltolerates no pavingresistant to frost (WH 1 - 6)can withstand windoval1st size , taller than 12 metreshalf-open crowngreengreenaverage growingFeathered leafAttractive autumn colourvaluable for bees (honey plant)non-toxic (usually)Ornamental fruitEdible fruits
Frequently asked questions
Carya glabra
Carya glabra can eventually reach a height of 15 - 25 (30) m, depending on the site and climate conditions.
Carya glabra is average growing and can eventually reach a height of 15 - 25 (30) m, depending on the site and climate conditions.
The leaves of Carya glabra turn yellow in autumn.
The right time to plant Carya glabra is during the dormancy period. In Western Europe, Carya glabra 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.