Town officials on Tuesday approved a contract with a New Canaan-based nursery to acquire 10 trees that will greet visitors to Kiwanis Park. The $6,850 contract with Frogtown Nurseries covers the purchase of the yellow wood trees that will be planted on a parking lot island that used to have Norway maples, Tree Warden Bob Horan told the Board of Selectmen at its regular meeting. Those invasive maples were “half-dead” and “decayed” because they’d been planted improperly years ago—in the late-1960s or early-‘70s, Horan said. The yellow woods are native to Kentucky with a “nice branching pattern,” their “white flowers” blooming in May and cascading down, Horan said. “Very insect and disease-free and very adaptable to different sites and soil conditions,” he said.