Aesculus flava (Yellow Buckeye)


Michael's Opinion

A. flava is one of the largest North American Aesculus reaching heights of over 30 m. Yellow flowers in May are very attractive although somewhat diminutive (15 cm) when compared to some of its European cousins. It does produce a 'decent' autumn colour display which is somewhat unusual for an Aesculus.

Botanical Information

FamilySapindaceae (Hippocastanaceae)
GenusAesculus
Speciesflava
SynonymsAesculus octandra
CategoryWoody
TypeTree (deciduous)
OriginNorth America, native to the Ohio Valley and the Appalachian Mountains.
Pronunciation

Details

USDA Hardiness Zone4 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone5
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-40
Temperature (°F)-34
Height15 - 22 m
Spread9 - 15 m
GrowthMedium
Flowering PeriodApril, May, June, July

Description and Growing Information

ShapeLarge and round.
LandscapeSpecimen or accent tree in parks and larger landscapes.
CultivationFull sun and partial-shade. Average, medium moisture and well-drained soils. Prefers fertile and humusy-sandy loams.
PestsLeaf blotch can be a problem. Powdery mildew, leaf spots and anthracnose may occur. Buckeye lacebug, Japanese beetles, bagworms and borers may be troublesome.
Notable SpecimensThe A.M. Cuddy Gardens, Strathroy, Ontario, Canada.
HabitatFloodplains, river bottoms, mountain slopes and stream banks.
Bark/Stem DescriptionThe bark is fissured and scaly.
Leaf DescriptionPalmate compound leaves with 5 spreading, toothed, ovate-oblong leaflets that are 10 - 17 cm long.
Flower DescriptionThe flowers are 1 - 3 cm long, in erect panicles that are 15 cm long and appear in upright clusters of many single flowers.
Fruit DescriptionGlobular dehiscent capsules consisting of 1 - 2 buckeyes encased by a partitioned husk.
Colour DescriptionThe leaves mature to a dark green in summer and are a yellowish-orange in autumn. The flowers are yellow. The fruit husks are light brown. The fruit turns a reddish-brown with a light hilum. The bark is a greyish-brown.
Texture DescriptionThe husk is smooth on outside and spiny on the inside.

Photographs