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Sweet Chestnut (Castanea species). Forest Chestnuts. The American chestnut (Castanea dentata) was one of the largest growing forest trees in eastern North America. It was important for timber as well as nuts for human use as well as wildlife.A deadly fungus disease, introduced from the Orient effectively wiped out this chestnut in the first half of the 20th century.he American chestnut (Castanea dentata) was one of the largest growing forest trees in eastern North America. It was important for timber as well as nuts for human use as well as wildlife. A deadly fungus disease, introduced from the Orient effectively wiped out this chestnut in the first half of the 20th century.
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.