A relative of beautiful flowering plants ​ — such as the golden onion, the bride’s onion, and the ornamental garlic — ​ the common onion is a producer of beautiful flowers itself.
Starp dārza sīpolu radiniekiem ir tādi dekoratīvi ziedaugi kā zelta ķiploki, Neapoles sīpoli un Aflatunas sīpoli, un tie arī paši zied skaistiem, savdabīgiem ziediem.