Garlic Mustard is an invasive plant that threatens our natural areas due to its prolific spread and lack of natural inhibitors. On April 30, Arbor Day, Master Naturalist volunteers gathered at Blackhawk Park in Edgar County to do their part in controlling this invasive plant. The volunteers pulled the Garlic Mustard, put it in garbage bags, and carried it out of the woods since it would continue to set seeds even after being pulled. The volunteers had an opportunity to pause and listen and watch the warblers in the park.