UC Master Gardeners, Santa Clara County, CA
University of California
UC Master Gardeners, Santa Clara County, CA

Oregano

Garden Help > Herbs

Oregano is grown for the aromatic leaves which can be used fresh or dried. Closely related to marjoram, oregano is stronger and more pungent. There are many varieties of oregano, for both culinary as well as ornamental use. With a wide range of flavor characteristics, you may wish to grow different varieties of oregano, as well as marjoram. Enjoy oregano in tomato, meat, and poultry dishes, as well as in stuffings and sauces.

How to grow

Keep plants trimmed to remain compact and the leaves tender.

  • Type: Perennial, evergreen, woody
  • Light: Full sun
  • Soil: Average soil, good drainage
  • Water: Dry to moderate
  • Size: 1-2' high, up to 18" wide or more. Space plants 18" apart

When to plant/propagate

  • From seed: Direct seed after the last frost date in spring, or sow seeds indoors 6-10 weeks prior to the last frost date
  • Transplants: Plant seedlings when danger of frost is past
  • Cuttings & divisions: Can be successful year round. Propagate from cuttings prior to bloom

Harvesting

  • For best leaf flavor, do not allow plant to flower
  • Harvest both the tender leaves (to be added at the end of cooking) and hardier leaves with whole stems (typically added at the beginning of the cooking process, then removed)
  • For most tender leaves, harvest frequently to encourage new growth and to prevent flowers from developing. Pinch off any flowers that do develop
  • Dry the leaves for winter use. Shelf life is approximately one year
  • Many beneficial insects appreciate oregano flowers, so consider allowing some plants to flower

Indoors: Oregano can be grown as an indoor plant with 5-6 hours of bright light from a sunny window, or 12-16 hours of supplemental light provided by cool white fluorescent or LED lamps

Common pests & diseases: Leafhoppers

More information

Recommended Varieties for Santa Clara County*

See our list of Spring Garden Market Herbs for varieties that we have found perform well here. 

*Many other varieties may also do well here in Santa Clara County. This list is based on UC Master Gardener trials, taste tests, and feedback from local growers.

Webmaster Email: webmaster-mgsantaclara@ucanr.edu