This publication was produced from 1986 to 1989 and provided information about United States filbert production in Oregon and Washington states. In 1990, the same information was published under the title Hazelnut (Filbert) Production.
This publication provides information about hazelnut (or filbert) production in the Northwestern U.S. Weather conditions and market trends that affected production are also noted. Prior to 1990, the same information was presented in the publication Filbert Production.