Fragrance in the garden isn’t limited to blooms alone. Dr. Allan Armitage reminds us that many plants offer scent through foliage as well as flowers. Fennel is a perfect example—simply brushing against the plant releases its unmistakable aroma.

And you’re not the only one who enjoys fennel. It also serves as a host plant for the swallowtail butterfly. Don’t be surprised if you notice swallowtail caterpillars chewing on the leaves in late summer. Their presence is not a problem, but rather a sign of a healthy, living garden ecosystem.