It’s Spring, a good time for a walk in the Arboretum. Every Sunday at 1 PM, guided walks begin from the Graham Visitors Center. While the walks are not specifically oriented to children, they are welcome to come on the walks. This month’s theme is Buds and Blooms: explore the signs of Spring from beautiful buds and early bloomers. The Big Leaf Maple, a native plant, now has four-inch flowers which are very visible because the tree is not yet fully leafed out.