About Us

Sunheaven Farms, LLC

For more than 30 years, we have raised our children on the farmlands of the Horse Heaven Hills. We have proudly watched our children grow up and step into the shoes of their fathers’ to run their farms and packing sheds. We believe in being good stewards of all that we have been given responsibility over. It is obvious that we cannot ever truly possess anything. We simply take care of it for our children’s children, as our ancestors did for us.


Our family owned farms were established in the Horse Heaven Hills near Prosser, Washington in the late 1970’s. The original owners were Lorin and Fay Munn, Robert and Larna Munn, Duane and Susan Munn, Brent and Elaine Schulthies,Brent and Berniel Hartley, and Clyde and Gay Bybee.

Sunheaven Farms, LLC was established in 1976 alongside these farms. Our purpose then, as it is today, is to support the Irrigation, Financial, and Safety needs of the farmers and their employees.

Many different crops have been grown over the past three decades. Currently the crops grown on the farm include onions, shallots, sweet corn, sugar beets, fresh peas, green beans, and wheat and seed crops, such as bluegrass, peas and beans. All of the farm’s crops are grown under center pivot irrigation, with water from the Columbia River and has expanded from 9,200 owned acres to over 20,000 acres including all rented and leased ground.

Our vision for the future

Our Irrigation team’s foresight and innovation have helped Sunheaven Farms to be leaders in the farming and irrigation industry. We’re constantly looking for new ways to improve the center pivot irrigation process — from our early adoption of manual control pumping stations to our automated PLC control system controlled with tablets and cellular phones.