Xy’s fifth grade class is building a model of an environmentally friendly house for an Earth Day contest, sponsored by the Mayor’s Office of Environmental Affairs. She wanted to top it off with a garden on the roof, and figured moss would be the perfect plant, since it does not require much soil. So we went to City Park to hunt for some moss. It was surprisingly hard to find! But Xy persevered and eventually she found some. I wonder if it’s illegal to take moss from a park? In any event, the model looks great with a moss garden on the roof.