Weed is a city located in Siskiyou County, California. As of the 2010 Census, the town had a total population of 2,967, down from 2,979 at the 2000 census. There are several unincorporated communities adjacent to, or just outside Weed proper. These include Edgewood, Carrick, Lake Shastina, Rancho Hills and Hammond Ranch. These communities generally have mailing addresses that use Weed, or its ZIP code. The total population of this area in 2007 was 6,318. Weed is about 10 miles (16 km) west-northwest of Mount Shasta, a prominent northern California landmark, and the second tallest volcano in the Cascade Range.
The town of Weed gets its name from the founder of the local lumber mill and pioneer Abner Weed, who discovered that the area's strong winds were helpful in drying lumber. In 1897, Abner Weed bought the Siskiyou Lumber and Mercantile Mill and 280 acres (110 ha) of land in what is now the City of Weed, for the sum of $400. By the 1940s Weed boasted the world's largest sawmill.
A town named Weed is also mentioned in John Steinbeck's novel Of Mice and Men (first published 1937) as being the town that George Milton and Lennie Small are fleeing from at the beginning of the book.