“Ginkgo day is a good day,” said a passerby, gazing at the ginkgo tree outside Carnegie Science Hall as it commenced its annual leaf drop last Thursday. The morning was below-freezing and crisp, so it ...

Dear Roger: I have three questions, but hope mostly that you can address the main one. • Enclosed are pictures of my two ginkgo trees. One is growing well, now in its fourth year. The problem is that ...

A ginkgo tree in December has the most brilliant golden foliage you will ever see, and I consider myself privileged to have a few of them growing in my neighborhood. The ginkgo is sometimes referred ...