Castanea is a genus of deciduous trees, located in the temperate parts of the Northern Hemisphere.
They have large yellowish catkins, which are borne in July, followed by nuts in prickly cups. The timber of several species is valuable.
C.crenata, Korean chestnut, is a small tree originating from Japan which grows 25-30 feet and produces edible nuts. C.denata, American chestnut, is much larger, growing to 100 feet and producing valuable timber and nuts but sometimes devastated by chestnut blight. C.henryi, Chinese timber chinquapin, is slow-growing and grows to around 90 feet, its nuts are conical. Below, C. sativa, common name sweet chestnut.
All thrive in warm, light soils but avoid chalky soils.