One day last year, after witnessing a bumper crop of butterflies, caterpillars and chrysalises at the Short Pump Park Pollinator Garden, Henrico Master Gardener Linda McBride was on her way to do routine maintenance on the garden. Before she arrived, sitting right on the pathway into the garden was a large picture of a monarch butterfly drawn in chalk. "This is just gorgeous," McBride recalled thinking. It was the work of Henrico resident Sam Moore, who began her chalk drawings as an activity in the park with her daughter, Emerald. Now, she does them in various parks, sharing her artistic...