Oregano can be grown from seed or cuttings. Seed propagated plants often do not come true from seed so it is suggested to obtain plants grown from cuttings. These cuttings are taken from plants with high flavor quality. If seeds are sown, place seeds on top of the growing media and press them into the surface. Do not cover the seeds as light is needed for germination. Keep moist. Oregano must be planted in a full sun location and good drainage is required for best growth and overwintering. True oregano is marginally hardy in zone 5. Many of the really desirable types are treated as tender perennials and may need to be brought indoors for the winter. To help ensure winter survival a winter mulch of evergreen boughs or straw applied in November or December after the soil has frozen is helpful. This is then removed as growth resumes in the spring.