Leaf lettuce grows with many edible herbs that help repel insects in the garden and taste good in a bowl of salad. Companion planting with herbs is a nice way to add flavor and color to your vegetable garden. When the lettuce leaves are ready for picking, pick a few leaves or sprigs of these companion herbs for a flavorful summer salad.
Dill is a good companion herb to grow with lettuce as it helps repel aphids. A member of the Umbelliferae, or Apiaceae, family, dill (Anethum graveolens) is an annual herb that grows up to 30 inches in height. It has very fine leaves and its yellow flowers form at the apex of the stem in an umbrella shape.
Dill grows in full sun and well-drained soil. Its leaves and flowers are used as a spice in culinary dishes and for pickling vegetables.
Garlic (Allium sativum) is a member of the Liliaceae, or lily, family and is a good companion herb for lettuce. Garlic plants grow as bulbs that form underground and tall slender flowering stems, similar to scallions, that grow to one foot in height.
The best time to plant garlic cloves is in the fall in rich, mulch-covered soil for the next summer's harvest. Garlic is used in food and as a medicinal herb for its cold-fighting, digestive and antibiotic properties.
Chervil (Anthriscus cerefolium) is another member of the Umbelliferae, or Apiaceae, family. Chervil is also known as garden-beaked parsley and salad chervil. This annual or biennial grows to 2 feet in height and forms umbrella-like white flower clusters in the spring and summertime.
Chervil grows in moist soil and full sun to partial shade exposure. Its leaves and roots are used in foods, and it is also used as a natural medicine for wounds and to aid digestion.
Mints of varying types are good companion herbs to grow in a lettuce garden bed. Mints (Mentha spp.) belong to the Labiatae, or mint, family and are aromatic perennials whose distinctive mint flavor is caused by the essential mint oil, menthol, as stated by Andi Clevely and Katherine Richmond in the Cook's Encyclopedia of Herbs.
Mints, such as peppermint, spearmint and apple mint, grow in moist, rich soil in sunny to partial shade areas. Mints is used in culinary dishes and for its medicinal properties for digestive disorders and for colds.
Nasturtium (Tropaeolum majus), a member of the Tropaeolaceae, or nasturtium, family, is a good companion herb for lettuce. Originally from South America, this perennial grows as a creeping plant up to 10 feet long. It produces red, yellow or orange blossoms in the summer and fall, and sometimes year round, in moist soils and full sun.
Nasturtium leaves and flowers are used in salads and as garnishes, and its seeds are ground into a spice. Nasturtium also has medicinal properties as an antiseptic and for digestion and urinary and respiratory ailments.