Kale

Cabbage loopers, cabbageworms, and flea beetles attack all members of the Brassica family, and kale is no exception. The potent smell of sage with camphor as a key component tells pests to look elsewhere to breed and feed.

Brussels Sprouts

Brussels sprouts are notorious victims of cabbage worms and cabbage looper moths. The moths of both can be deterred by sage plants nearby.

Cauliflower

Cauliflower is not the easiest vegetable to grow, partly because it is highly susceptible to cabbage worms and cabbage loopers. Sage plants help keep these pests away.

Collard Greens

The holes in the leaves of collard greens are usually a dead giveaway that flea beetles have been feeding on the plant. The plants are also susceptible to cabbage loopers and cabbage worms. With sage as a companion plant, you can keep all three pests at bay in one fell swoop.

Kohlrabi

Kohlrabi is a cool-weather crop, but that doesn't mean that there are no cabbage worms and flea beetles around. Sage works as a deterrent as long as there are fresh, green leaves on the plant.

Mustard Greens

If you don't want the tender mustard greens to be riddled with holes from flea beetle feeding, plant a sage nearby. It will also help deter cabbage worms and cabbage loopers.

Turnip

If you plan on harvesting tender young turnip greens, keep flea beetles away with a sage plant nearby. The camphor content in the leaves, which deters pests, decreases as the leaves mature so make sure to cut your sage regularly to encourage new, fresh foliage growth.

Lemon Balm

Sage is a good companion plant for herbs with similar growing conditions, and lemon balm is one of them. It is also a perennial that thrives in full sun and requires little to moderate watering.

Oregano

Oregano is considered a good companion plant for sage, especially in an herb garden with mostly perennial herbs. Both sage and oregano thrive in full sun and sandy soil and stand up to moderate drought.

Peppermint

Peppermint is another good companion for sage because of similar growing conditions. However, because of its rampant growth, you need to keep peppermint from overgrowing sage, which stays much more compact and does not spread like peppermint. A good way to control peppermint is to plant it in a container with the bottom removed, which restrict its horizontal root growth.