Koelreuteria paniculata 'September' – Koelreuteria paniculata 'September'

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Sapindaceae

Koelreuteria paniculata 'September' – Koelreuteria paniculata 'September'

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This American selection initially shows a slower growth rate than the species. The rounded crown grows steadily broader. Widely-spread branches bend downwards. The large, pinnate (sometimes doubly pinnate) leaves consist of 7 - 15 leaf segments. These are lobed, approx. 7 - 10 cm in length and have a serrated edge. The leaves are a bronze colour in the spring and turn yellow to orange in the autumn. The numerous small, yellow flowers are in terminal plumes approx. 30 cm long. The tree flowers 6 - 8 weeks later than the species and the flowers are often very numerous. The bladder-like fruit, approx 4.5 cm long, change colour from green to bronze and contain a few black seeds. The fruit remains on the tree for a long time. This tree prefers a sheltered site since young specimens can suffer frost damage, but recover well.

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Specifications
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Height
7 - 17 m
Crown
broad, almost round, somewhat irregular, light, open crown
Bark and branches
grey-brown, slightly grooved
Leaf
(doubly) pinnate, dull green, 30 - 35 cm, feathered leaf
Autumn colour
yellow, orange
Flowers
yellow, in large terminal plumes, August/September
Fruits
bladder-shaped, bronze in colour, seeds black, Ø approx. 4.5 cm
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
makes very few demands on the soil, stands up to dry conditions
Soil moisture
suitable for dry soil
Paving
tolerates no paving
Winter hardiness zone
6b (-20,5 to -17,8 °C)
Wind resistance
moderate
Other resistances
resistant to frost (WH 1 - 6)
Fauna tree
valuable for bees (honey plant), valuable for butterflies
Application
parks, tree containers, cemeteries, large gardens
Shape
clearstem tree, multi-stem treem
Origin
Indiana University, Bloomington, USA, 1960
Clear stem tree Multi-stem tree clay soil loamy soil sandy soil tolerates no paving light-loving resistant to frost (WH 1 - 6) suitable for dry soil 1st size , taller than 12 metres open crown green yellow August average growing Conspicuous bloom Feathered leaf Attractive autumn colour valuable for bees (honey plant) valuable for butterflies non-toxic (usually) Ornamental fruit
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Frequently asked questions
Koelreuteria paniculata 'September'

Koelreuteria paniculata 'September' can eventually reach a height of 7 - 17 m, depending on the site and climate conditions.

Koelreuteria paniculata 'September' is average growing and can eventually reach a height of 7 - 17 m, depending on the site and climate conditions.

The leaves of Koelreuteria paniculata 'September' turn yellow, orange in autumn.

The right time to plant Koelreuteria paniculata 'September' is during the dormancy period. In Western Europe, Koelreuteria paniculata 'September' 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.

Koelreuteria paniculata 'September' blooms in august.
General