AgricultureID

State · US-WA

Washington

Washington splits sharply at the Cascades: a mild, warm-summer Mediterranean/oceanic west (Csb) and a dry interior ranging from cold semi-arid steppe (BSk) in the Columbia Basin to Mediterranean-influenced continental (Dsb) on the Palouse. The dry interior summers make irrigation and stored soil moisture decisive.

Major crop systems

  • Irrigated tree fruit — apples (the leading state), sweet cherries, and pears
  • Dryland wheat on the Palouse
  • Wine grapes, hops, potatoes, and irrigated forage

Major livestock systems

  • Dairy in the lower Yakima Valley and western lowlands
  • Cattle feeding and cow–calf

Agricultural land: The irrigated Columbia Basin and the Yakima, Wenatchee, and Okanogan valleys concentrate high-value tree fruit, wine grapes, hops, and potatoes, while the Palouse in the southeast is premier dryland wheat country. Irrigation: Irrigation is decisive east of the Cascades — the Columbia Basin Project and the Yakima River supply orchards, vineyards, and row crops — while the Palouse produces wheat on stored winter soil moisture.

Agroecological zones: Csb (Warm-summer Mediterranean), BSk (Cold semi-arid (steppe)), Dsb (Mediterranean-influenced continental)

Documented crops & livestock

Official institutions

  • Washington State Department of Agriculture (WSDA) — State department for agriculture, plant and animal health, and marketing.
  • Washington State University (WSU) Extension — Land-grant research and extension for tree fruit, wheat, and irrigated crops.
  • USDA National Agricultural Statistics Service (NASS) — Official state-level crop, livestock, and Census of Agriculture statistics, published through its regional field office network.

Data coverage & limitations

Descriptive profile; subnational statistics for Washington are published by USDA NASS and the Washington State Department of Agriculture and are not reproduced numerically here.

  • Boundaries and administrative classification follow the ISO 3166-2 subdivision system and USDA/state reporting units.
  • No subnational statistics are reproduced here; any official figures are dated, versioned, and periodically revised — read them with their year and source.
  • The Köppen classification of the dry interior (BSk versus Mediterranean-influenced Ds types) varies between sources; the zones listed reflect the main agricultural districts.
  • The Cascade Range divides the state into a mild, wetter west and a dry, irrigation-dependent interior that a statewide profile cannot fully separate.

Sources

This article draws on the following authoritative sources. See our sources & methodology for how they are selected.

  1. [1]USDA NASS — National Agricultural Statistics Service (opens in a new tab)

    USDA National Agricultural Statistics Service (NASS)

    Authoritative

    Cited for: Official state agricultural statistics

    Type:
    Government agency
    Jurisdiction:
    United States
    Accessed:
    2026-07-12
  2. [2]USDA — U.S. Department of Agriculture (opens in a new tab)

    United States Department of Agriculture (USDA)

    Authoritative

    Cited for: Federal agricultural context

    Type:
    Government agency
    Jurisdiction:
    United States
    Accessed:
    2026-07-12