Growing Sage - A Wise Choice for the Herb or Flower Garden

Growing Sage
Sage plants can be evergreen and make a nice addition to the ornamental beds, too. Photo © Marie Iannotti

Overview and Description:

Culinary sage refers to a small group of the genus Salvia. These are evergreen perennial subshrubs with woolly grayish leaves that add an musky, earthy freshness to foods. Spikes of purple/blue flowers appear in mid-summer.

Botanical Name:

Salvia officinalis

Common Name(s):

Common Sage, Garden Sage

Hardines Zones:

Sage plants will be perennial in  USDA Hardiness Zones 5 - 9. Common sage tends to be a bit hardier than the more ornamental varieties, like golden, purple and tri-color sage.

Exposure:

For healthy plants, give your sage plants full sun. In hot zones, USDA 8 or higher, they can handle some afternoon shade, but you need some sun or a breeze to dry the dampness of the leaves or they will rot.

Mature Size:

Most culinary sage varieties grow about 1 - 2 ft. (H) x 2 -3 ft. (W), especially when in flower. You will probably be snipping and harvesting, which will limit their size, and plants will sprawl rather than grow tall.

Bloom Period/Days to Harvest:

Sage plants bloom in mid-summer. They may bloom their first year, depending on size and site, but you are really growing the plants for the leaves.

Allow the plants to grow unharvested for the first year, to become established. After that you can harvest leaves at anytime, although they are consider at their best before or just after blooming. I've brushed snow aside and harvested in winter.

Design Tips:

Sage quickly becomes a small woody shrub that can need replacing every 3-4 years.

Frequent harvesting and pruning helps to reinvigorate sage plants. While a sage plant is in its prime, it makes an attractive addition to both herb gardens and ornamental borders. The purple, golden and tri-color varieties work especially well as edgers, for borders or paths.

Suggested Varieties:

Common Salvia officinalis is excellent for use as a seasoning and is undemanding in the garden.

For variety and attractiveness, try one of the following.

  • Tricolor doesn't get as large as S. officinalis, but the variegation of its green, white and pink/purple leaves make it as much an ornamental as a culinary herb.
  • Purple (S. Purpurescens) has deep purple young leaves that mature to a burgundy
  • Aurea is a compact grower with soft yellow leaves and purple flowers.

Using and Cooking with Sage:

Sage leaves are a popular poultry and meat seasoning. They can be used both fresh and dried, even fried. Sage also makes a nice tea.

Besides seasoning, sage leaves and branches are often featured in crafts, like wreaths, where they add color, texture and scent.

Sage stores well as a dried herb. I prefer to dry the whole leaves and crumble them as needed. This seems to help the leaves retain the most flavor.

Growing Tips:

Sage plants can be started from seed, root cuttings or transplants. Sage seed needs to be sown while fresh. The seed does not store well and even fresh, is not terribly reliable and is slow to establish.

Root cuttings can propagated by layering. In fact, branches that touch the ground will often set down roots on their own. If this happens, you can separate the rooted section from the original plant and transplant it.

Fortunately, reasonably priced, small sage plants can be found in most garden centers in the spring. This is the easiest method to get an established plant quickly.

Sage prefers a warm, sunny location, although it does not enjoy extreme heat. It is not particular about soil, except that it be well-drained.

Maintenance:

Pruning after flowering will keep plants attractive and prevent them from getting too woody and leggy.

Sage is very drought tolerant and does not like sitting in wet soil. The leaves will get mildew if they are allowed to sit damp, so water infrequently.

The essential oils of herbs are strongest when they are grown in a lean soil. Go easy on the fertilizer. It's better to simply side dress with organic matter, in the spring.

Sage is very happy growing in containers. If you want to try growing sage indoors, you will need to provide strong, direct light.

Pests and Problems

Few pests bother sage. It is more frequently killed by excess water, not enough light, or lack of pruning, than insects or disease.