Soft White Spring Wheat

Seahawk uniquely packages outstanding defense traits and very good yield potential — a winning combination.

Seahawk is nearly immune to stripe rust based on a combination of seedling and adult plant resistance genes and holds-up without fungicide application under the most severe epidemics. Seahawk genetics are mainly based on Whit and Alpowa backgrounds—proven across the PNW over the past 20 years. Hessian fly resistance, superior test weight, very good aluminum tolerance, Fusarium head scab tolerance, shorter plant height with good straw strength, and very good-to-excellent yield potential in intermediate, high rainfall, and irrigated production areas of the PNW round-out Seahawk’s complete package. Seahawk should be of particular interest to growers in Spokane, eastern Whitman, Columbia, and Walla Walla counties, northern and southern Idaho, and the Willamette Valley of Oregon.


Yield Potential is Very Good–Excellent

Test Weight is Excellent

Maturity is Medium-Later

Height is Medium

Quality is Most Desirable

Straw Strength is Very Good

Disease Resistance

Stripe Rust is Excellent

Hessian Fly is Resistant

Aluminum Tolerance is Excellent

Bred to Dominate the Field

Two-Year Variety Testing Data from 2015-2016

>20” Yield (BU/A)16″-20″ Yield (BU/A)Test Weight (LBS/BU)Protein (%)Falling Numbers (SEC)
LSD (0.05)220.30.3

>20″ Precip (Fairfield, Farmington, Palouse, Pullman) 2015-2016, 6 loc/years

16-20″ (Dayton, Mayview, Plaza, St. John, Walla Walla) 2015-2016, 8 loc/years

Falling numbers based on 9 location average in 2015 (5) and 2016 (4)


Foundation seed of  Seahawk is maintained by the Washington State Crop Improvement Association. For seed inquiries please call (509) 334-0461. U.S. Plant Variety Protection status for this cultivar is pending.

View WSU Variety Seahawk in pdf format (pdf).

Intended Production Area

Seahawk intended production area in the PNW.

Orange = Dryland
Teal = Irrigated

Support for the development of this variety was provided by Washington State University, the USDA, and the Washington Grain Commission. For more information, please visit