Hi Joe! Thanks! We do include both oregano and marjoram in the schedule, both are 6-7 weeks prior to last frost. As a rule of thumb, almost all herbs can be sowed in that same time frame. The only general exceptions are mint (10 weeks) and basil/dill (5-6 weeks). We’ve tried earlier and later sowings on oregano and marjoram, the photoperiodism gets them every time! As a result, our general advice is to sow more plants to get a larger harvest, should that be your desire. Thanks for your kind comment!