Ginkgo trees will be one of the new items to be offered at the Great Plant Sale to be held Thursday through Saturday, May 17-19 at the Buffalo and Erie County Botanical Gardens, 2655 South Park Ave., Buffalo. Ginkgos are hardy plants that are used as street trees, said Kristin Pochopin, director of horticulture. Some people may be wary of ginkgo trees because the fruit is stinky and messy, but these trees are at low risk for fruiting. “These are low…