By Connie Cottingham
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March 10, 2025
I recently picked up a couple of fennel bulbs in the grocery store—not quite sure what I would do with them, but completely enchanted by the idea of trying something new. Honestly, this isn’t unusual for me. I often shop in garden centers the same way—choosing things that delight me without a clear plan in mind. Cooking with Fennel Fennel seems to be more common in European kitchens than in the United States. In her Around My French Table cookbook, Dorie Greenspan suggests adding a fennel bulb, cut into strips, while sautéing onions in her leek and potato soup recipe. Her approach is genius: leave the vegetables in the broth, so every serving feels fresh. It can be enjoyed as-is, pureed and served cold as vichyssoise, pureed into a creamy soup, or topped with croutons. This variety keeps leftovers exciting rather than repetitive. While I’ve grown fennel before, it’s always been for my beloved swallowtail butterflies rather than the kitchen. That alone makes fennel a worthwhile addition to the garden. But I’ve since learned its foliage can be used in salads, as a garnish, or even in flower arrangements. Growing Fennel in the Garden Fennel ( Foeniculum vulgare ) is a tender perennial and a member of the parsley family. To grow it successfully, plant seeds in succession during spring and fall, as fennel tends to bolt in summer heat. When thinning seedlings, don’t let the pulled plants go to waste—they’re excellent in sandwiches and salads. Fennel’s versatility extends to ornamental gardening, too. Consider planting it in a flower border where its feathery foliage, especially the bronze fennel, provides striking contrast among flowers and shrubs. Some sources report that fennel doesn’t always play well with other vegetables and can cross-pollinate with dill, so plan your garden layout accordingly. If you’re not growing fennel for seeds, pinch off the blooms to encourage larger bulbs and prevent self-sowing. The blooms themselves make a delightful garnish. For Butterflies and You Whether you grow fennel for its fine-textured foliage, culinary uses, or to host swallowtail butterflies, every reason to add it to your garden is a good one. Swallowtail caterpillars devour a lot of foliage to transform into butterflies, so planting multiple fennel plants is a must if you want to share with them. Bronze fennel, with its deep-hued leaves, makes a particularly striking addition to the garden.