Horsechestnuts
Genus: Aesculus
Family: Hippocastanaceae

Don't confuse these trees with the edible chestnuts that are roasted on an open fire. All horsechestnuts have toxic seeds, flowers, and leaves. The nuts (or "conkers") are a dangerous problem when they fall on sidewalks and, for this reason, Portland will no longer allow these trees to be planted along the streets.


Aesculus x carnea
Red Horsechestnut


This tree is a hybrid between the Common Horsechestnut (Aesculus hippocastanum) and the Red Buckeye (A. pavia), native to the southeast U.S. There are several cultivars of this tree, all of which bloom varying hues of red. A small tree, it fits in a city garden.

'Briotti' - This attractive hybrid was developed in Germany. The red, profuse blossoms come in May. The tree does not attain a great height.

Maps: 22, 25, 30


Aesculus hippocastanum
Common Horsechestnut


A deciduous tree, the Common Horsechestnut is native to mountainous Greece and Albania. It is a large tree with spring blossoms and relatively large nuts.

Maps: 27