This past summer I inherited a garden dedicated to birds and butterflies. Not much activity on that front, however. What did appear and take over is a plant known for good reason as "wormwood" (Artemisia absinthium), and worm its way it does. It had taken over much of the garden early on and I tried to salvage other things by beating it back, stomping on it, and pulling it up. Nonetheless, it is flourishing, worming its way along any place where it had just been removed. Gardeners: Any advice?