Wormwood is recognized as a effective insect repellent.
It is used in sachets to keep moths away and is planted in gardens to discourage pests such as black flea beetles, cabbageworm butterfly, and slugs. Tea made of it will repel aphids. In making a sachet with it, you can add mint, tansy, thyme, cinnamon sticks and cloves to improve the effectiveness and the odor. Wormwood can be grown in any garden, even in one with poor soil. Routine care can be limited to weeding thoroughly and adding compost occasionally.