Deciduous broadleaf. Opposite. Palamtely compund. Leafstalks 7.5 - 18 cm long. 7 leaflets (sometimes 5) spreading fingerlike. Leaflets are 10 - 25 cm long.
Leaflets are 2.5 - 9 cm wide. Obovate or elliptical. Broadest toward aburpt point. Tapering to stalkless base. Saw-toothed. Dull dark green above.Paler beneath. Flowers:
2.5 centimetres long. Narrowly bell-shaped. With 4-5 spreading narrow white petals, red and yellow-spotted at base. Many flowers in upright branched clusters 25 cm long. Bloom in late spring. Fruit:
- 5 - 6 centimetres in diameter.
- A brown spiny or warty capsule, splitting into 2-3 parts.
- 1 - 2 large rounded shiny brown poisonous seeds.
- Maturing in late summer.
- Light brown.
- Ending in large blackish sticky bud.
ray or brown Thin. Smooth. Becoming fissured and scaly as tree ages. Height:
21 metres. Diameter:
- 0.6 metres.
The growth rate is rapid while the tree is young but slows down with age.
Growth is more than 18 inches a year.
Species Requirements Distribution Range:
Widely planted across the US. Escaped in the Northeast.
- Native of SE. Europe
- A shade and street tree in rich, moist soils.
A sunny exposure sheltered from wind.
Tolerance to Salt:
Anthracnose. Canker. Leaf blotch. Leaf spot. Powdery Mildew. Wound rot. Stem diseases. Non-parasitic leaf scorch. Common Pests:
Comstock mealybug. White-marked tussock. Japanese beetle. Elm spanworm. Aphids. Leafhoppers. Walnut scale. Bagworm. Flatheaded borer. Problems:
- Stout branches are broken by winds.
- Susceptible to cracking.
- The large leaves, nuts and dropping twigs can create litter.
- Horsechestnut is weak wooded and usually develops leaf scorch during the summer.
Squirrels eat the embryo stalk. However, all parts of plant are very toxic.
- Tolerant of city conditions.
- Showy in spring when bearing white flowers.
- Easy to transplant.
- Casts a dense shade.
- Best time to prune is between May-July.
- Avoid pruning from October - December due to reduced cold hardiness.
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