Polly Hill Arboretum hosts an afternoon devoted to trees on Friday, April 26, from 1 to 3 pm. Celebrate Arbor Day by taking a guided tour of spring-flowering trees with Polly Hill curator Todd Rounsaville, and watch a tree-planting demonstration. Learn how to properly plant a tree, and stick around for a tree seedling giveaway of oriental spruce toward the end of the celebration. This event is free and open to the public. Seed giveaway is first come, first served.