Published: Dec 06, 2010 11:39 PM EST
Updated: Dec 06, 2010 8:39 PM EST

LEE COUNTY, Fla - Farmers across Southwest Florida are bracing for a bitter blast of cold air.

With temperatures expected to drop into the 30's, a freeze warning is in effect.

"It's going to be a busy night," said Mike Greenwell, owner of 31 Produce in North Fort Myers.

Early Monday afternoon, the staff at Greenwell's farm began covering the crops and preparing for the worst.

"It's going to be a couple long days here. We're going to everything we can to save what we got," he said.

With temperatures plummeting Monday night and the next few days, Greenwell called in extra staff to start covering the crops.

Hours are spent protecting tomatoes, zuccinnis, lettuce, everything that's been planted at the farm.

"We have 12-14 things we're growing at one time. We have lots of different strategies going on," he said.

Many farmers in Southwest Florida are still recovering from last year's cold snap.

Millions of dollars in crops were lost in one night.

That's why so many farmers are concerned about the temperature for the next few nights.

"it's very scary that it's starting early this year. We're going to have to watch it, keep our fingers crossed and pray," said Amanda Lee.

Lee co-owns C&L Farms in east Lee County.

They too are worried about all their produce and fruit.

Like other farmers, they spent part of Monday covering crops.

No matter what, these farmers say they'll be getting little sleep.

"I'll be here all night," Mike Greenwell said.