Greenhouse company Great Lakes Growers is doubling capacity by next spring, but plains call for more expansion after that. ( Great Lakes Growers )

Great Lakes Growers, an 80,000-square-foot hydroponic greenhouse facility in Burton, Ohio, is doubling in size.

The company’s long-range, four-phase plan calls for an eventual production area of 380,000 square feet, according to a news release. At the end of the second phase, with 160,000 square foot, the company will have the capacity to produce 6 million heads of lettuce a year.

The company opened in 2012 and is known for adopting new technologies according to the release, including a semi-automatic growing and crop handling design. With the new construction the company plans to take its design to the “next level” by cutting inefficiencies with automation and space management.

“We have been very pleased with our market share up to this point, but the time has come to bring our diverse product line of living and fresh cut lettuce and herbs to new customers in new markets,” John Bonner, owner and CEO of Great Lakes Growers, said in the release.

The company is upgrading its original production facility and added a 20,000 square-foot cooler and packing line to allow the company to harvest and pack pre-cooled product, a move that will increase shelf life, according to the release.

Construction began in mid-September and the second phase is scheduled to be completed in March.

The company grows and sells herbs and lettuces, both as “living” products and fresh cut products.