Clark County has provided fertile ground for farmers, and more than one area is named for their crops.
Prune Hill, now in Camas, once was known as Strawberry Knoll. The name was changed in 1883 after M.A. Boyle planted 350 prune trees on the hill. Similarly, Fruit Valley, now in west Vancouver, was named for the prize orchards in the area.
When prunes were the key crop in Clark County in the 1920s, a group of Vancouver boosters came up with a slogan for their civic organization promoting the local industry. Known as the Prunarians, their slogan was "We're full of prunes." At the time, Clark County was considered the prune capital of the world.