Shell-on Heart Nuts
Japanese walnut with a thick shelled but easily crackable, usually heart shaped nut, sweet and mild. The heartnut is a native of Japan that is well suited to the Great Lakes fruit growing regions (zone 6), a region similar to its native regions in Japan. The nut is named after the shape of the nut, as the illustration shows. It is considered a seed sport of the Japanese walnut and not a different species. The Japanese walnut is an oval nut, unlike the heart shaped form of the heartnut. When heart nut seeds are planted, a wide variety of nut shapes and sizes can be produced by the offspring.