Meet some native bees. Bees come in all shapes and sizes, and many are specialists that single-flower species depend on to reproduce. In fact, native bees exhibit floral fidelity — when one species is in bloom, they will forage only on that species. This fidelity increases the flower’s genetic pool and seed production. When these native specialist bees aren’t around, generalists take over; they don’t show floral fidelity, resulting in fewer seeds.