The United States Department of Agriculture adopted national grade standards for apples in 1923.

[3] In 1980, the WSDA began an apple maggot control program in order to prevent the pest from establishing itself in eastern Washington, an important apple-growing region.

[4] As of 2018[update], the apple maggot has never been detected in fruit packed commercially in the state.

[5] Following the passage of Washington Initiative 502 in 2012, the WSDA provides services for the state's recreational cannabis industry.

[7] The WSDA plans to provide a service similar to organic certification for cannabis beginning in 2019.