(Greatlakesecho) - Michigan’s wine industry continues to grow with the number of approved commercial wineries rising from 55 to 138 in the past 10 years.

Although Michigan is the fourth-largest grape-growing state, an inadequate supply of Michigan-grown grapes, rather than possible oversaturation of the market, might be the industry’s major concern, said Karel Bush, the executive director of the state’s Grape and Wine Industry Council.

Current in-state and out-of-state markets are sufficient for existing wineries to survive, Bush said. So is the acreage for vineyards in the state.

“There is absolutely room for continued growth in the number of wineries in all regions of the state,” she said. “Just take a look at Napa Valley. It has more than 400 wineries in an area about twice the size of the Leelanau Peninsula, which has just 26 wineries.”