Apio Inc. has boosted its stake in greenhouse grower Windset Farms.

With a recent stock purchase, Guadalupe, Calif.-based Apio increased its ownership stake in Delta, British Columbia-based Windset from 20.1% to 26.9%, according to a news release from Menlo Park, Calif.-based Landec Corp., Apio’s parent company.

Apio first partnered with Windset in 2010, when Apio licensed Windset to use Landec’s patented BreatheWay packaging technology to pack cucumbers, peppers and tomatoes.

In 2011, Apio bought $15 million of stock in Windset.

Apio considers Windset to be the most advanced and highest-yielding hydroponic greenhouse vegetable producer in North America, Ron Midyett, Apio’s chief executive officer, said in the release.

“Our strategic partnership with Windset continues to expand,” Midyett said. “We’re pleased that Windset is now selling both packaged cucumbers and peppers using our BreatheWay packaging technology, with sales of those products rapidly expanding.”

Apio is working with Windset on additional possible uses of BreatheWay packaging for Windset products, Midyett said.