Aesculus x carnea (Red Horsechestnut)


Michael's Opinion

An excellent tree for the large landscape where it has room to perform. Stunning red flowers in May or very early June are the plants main asset.

Botanical Information

FamilySapindaceae (Hippocastanaceae)
GenusAesculus
Species x carnea
CategoryWoody
TypeTree (deciduous)
OriginA cross between A. pavia and A. hippocastanum.
Pronunciation

Details

USDA Hardiness Zone4 - 7
USDA Hardiness Ref.
Canadian Hardiness Zone4
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-35 - (-12)
Temperature (°F)-30 - 10
Height10 m
Spread8 m
GrowthMedium
Flowering PeriodJune

Description and Growing Information

General DescriptionA cross between A. pavia and A. hippocastanum, with spectacular red flowers in May or June.
ID CharacteristicRed flowers but with typical Aesculus leaves.
ShapeLarge rounded crown.
LandscapeA specimen tree for the large landscape.
PropagationEven though it is a hybrid it is purported to come true from seed. Stratify seed at 5°C for four months.
CultivationEasily cultivated in average garden or landscape conditions. Suitable also for heavy soils but that have positive drainage.
PestsLeaf anthrocnose has been a minor problem.
Bark/Stem DescriptionDark grey to beige and in coarse plates, quite distinctive.
Flower/Leaf Bud DescriptionBuds are quite pronounced, globose, and scaled and are often in pairs at the end of the twig.
Leaf DescriptionPalmate leaves, dark green and somewhat glaborous on the underside but an almost shiny green on the top. Usually five leaflets per leaf.
Flower DescriptionA large panicle to 20 cm tall and 10 cm wide. Bright rich rose red.
Colour DescriptionLittle autumn colour of note, however the tree does not appear to suffer the fungal leaf infections that A. hippocastanum does.
Texture DescriptionCoarse textured tree.

Photographs