Marjoram Origanum vulgare is food for the following moths:

0840 Thiotricha subocellea
1361 Purple and Gold Pyrausta aurata
1373 Bordered Pearl Paratalanta pandalis
1689 Mullein Wave Scopula marginepunctata
2434 Burnished Brass Diachrysia chrysitis
2484 Pinion-streaked Snout Schrankia costaestrigalis