Grindstone GinkgoGrown for its AWESOME golden yellow fall foliage color and for its narrow growth habit perfect as a street tree and for spots in the garden when space is limited. 'Grindstone' is even more narrow than the popular 'Princeton Sentry.' Leaves drop in winter after several weeks of color and return early the following spring. 'Grindstone' is a male ginkgo It is preferable to purchase a male ginkgo as female ginkgos produce a smelly fruit. Ginkgos are one