oakchestnut

Oakchestnut is a non-scientific term used informally to describe a concept that blends characteristics of oak trees (Quercus) and chestnut trees (Castanea). It is not a recognized species, cultivar, or taxon in major plant databases. The name can appear in horticultural marketing, in discussions of forest composition, or in speculative discussions of intergeneric crosses. Because oaks and chestnuts belong to different genera and have distinct genetic makeups, there is no widely documented, viable natural intergeneric hybrid known as "oakchestnut."

In ecology and forestry, oak-chestnut is sometimes used to describe stands where oak species and American chestnut historically co-occurred or co-dominated. After the chestnut blight of the early 20th century, American chestnut declined, changing stand dynamics; the term may still be used in historical or restoration contexts to discuss potential mixed-species assemblages. In horticulture, "oakchestnut" may refer to a cultivar or landscaping concept that aims to combine aesthetic traits of both trees, though such cultivars are rare and not widely standardized.

As a term, oakchestnut remains informal and context-dependent, without a fixed definition in mainstream botany or forestry. See also Quercus, Castanea, American chestnut, chestnut blight, and oak forests.