It's barely a blip on the landscape, but hybrid hazelnuts are finding a place as a fledgling crop in the Midwest.
The pea-sized nuts, also known as filberts, are native to the eastern half of the U.S. and grow on bushes but are too small to be commercially viable. But plant breeders have been crossing two U.S. varieties with the larger dime-sized European hazelnut that grows on trees. The result is a cold-hardy hybrid beginning to show promise.
Linda Meschke, president and founder of the nonprofit Rural Advantage, said hybrid hazelnuts are one of several "third crops" (besides corn and soybeans) that farmers can grow to increase income and improve the environment. Her organization, based in Fairmont, promotes interconnections between farming, ecology and community.
The hybrid hazelnuts are perennials with an extensive root system that protects the soil from eroding, she said.
"It would be an excellent crop to grow in buffer areas because of the stream bank protection," she said. "They also provide food for wildlife."
The hybrids have relatively few diseases or pest enemies, she said, making it easier to grow them organically if the right fertilizers are used.
Nearly all of the world's supply is the European variety, which are the hazelnuts usually found in nut mixes and spreads and are also grown in the Pacific Northwest.
But Meschke estimates about 100 farmers are growing the hybrid hazelnuts in Minnesota. There are probably a similar number of growers in Wisconsin, she said, and several dozen in Iowa and northeastern Illinois. The bushes typically average 6 to 8 feet in diameter and 10 to 12 feet in height.