A herb farm is usually a farm where herbs are grown for market sale. The herbs may also be grown for their essential oils or as raw material for making herbal products. Some herb farms also have gift shops, classes, and sometimes offer food for sale. In the United States, some herb farms belong to trade associations.

Herb garden at Kariwak Village in Tobago

Lavender growing on a farm

In general use, herbs (pronounced /ˈɜrbs/ by some U.S. speakers, or /ˈhɜrbs/ by other English speakers) are any plants "with leaves, seeds, or flowers used for flavoring, food, medicine, or perfume" or parts of "such a plant as used in cooking". (In botanical use, the term "herb" is employed differently, for any non-woody flowering plant, regardless of its flavor, scent or other properties, and thus includes only grass-like plants and forbs.)

Herbs have a variety of uses including culinary, medicinal, and in some cases spiritual usage. General usage differs between culinary herbs and medicinal herbs. In medicinal or spiritual use any of the parts of the plant might be considered "herbs", including leaves, roots, flowers, seeds, resin, root bark, inner bark (and cambium), berries and sometimes the pericarp or other portions of the plant. Culinary use of the term "herb" typically distinguishes between herbs, from the leafy green parts of a plant (either fresh or dried), and spices, from other parts of the plant (usually dried), including seeds, berries, bark, root and fruit.

A farm is an area of land, or, for aquaculture, lake, river or sea, including various structures, devoted primarily to the practice of producing and managing food (produce, grains, or livestock), fibres and, increasingly, fuel. It is the basic production facility in food production. Farms may be owned and operated by a single individual, family, community, corporation or a company. A farm can be a holding of any size from a hectare to several thousand hectares.

The word in the sense of an agricultural land-holding derives from the verb "to farm" a revenue source, whether taxes, customs, rents of a group of manors or simply to hold an individual manor by the feudal land tenure of "fee farm". The word is from the medieval Latin noun firma, also the source of the French word ferme, meaning a fixed agreement, contract, from the classical Latin adjective firmus-a-um meaning strong, stout, firm. As in the medieval age virtually all manors were engaged in the business of agriculture, which was their principal revenue source, so to hold a manor by the tenure of "fee farm" became synonymous with the practice of agriculture itself.