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The chestnut group is a genus (Castanea) of eight or nine species of deciduous trees and shrubs in the beech family Fagaceae, native to temperate regions of the Northern Hemisphere. Asiatic species Castanea crenata (Japanese chestnut), Castanea mollissima (Chinese chestnut), Castanea davidii (China), Castanea henryi (Chinese chinkapin, also called Henry's chestnut â China) and Castanea seguinii (also called Seguin's chestnut â China).
How to Harvest Chestnuts. Chestnut burrs each contain two or three nuts. Chestnut trees (Castanea spp.) make attractive deciduous landscape trees that also provide edible nuts in fall. At maturity these trees can reach more than 30 feet tall, and you need several trees if you want them to produce nuts.