Hyssop is one of the best plants for attracting pollinators like butterflies, bees and hover flies. Strong-scented hyssop repels white cabbage butterflies by masking the smell of brassicas nearby with its aroma. Related members of the Labiatae family, including mint, lemon balm, cat nip, pennyroyal are excellent attractors of tachinid flies, hover flies and parasitic wasps.