FRESNO COUNTY, Calif. (KSEE/KGPE) - A freeze warning is in effect until Wednesday and local farmers are prepared to protect their crops.   According to Ryan Jacobsen, the CEO of the Fresno County Farm Bureau, there are a few crops to keep an eye on when it gets cold out. "From an agricultural perspective, we take these kinds of events very seriously," he explained. "The two crops that are probably most sensitive this time of year are citrus as well as vegetable crops." He said lots of preparation goes into making sure those crops stay warm. "Running water or groundwater, which helps to release heat out into the field. In addition, you'll see those big fans that are running," he noted. "It's really colder, about 3 to 4 degrees colder at ground level than it is about 50 feet up. And so by mixing that air up, you're helping to boost the temperature up at those citrus levels there so that you're hopefully able to escape any kind of damage." Jacobsen adds the most impacted communities will be those living in rural areas.  "Particularly in the rural areas, there can be anywhere from a 7 to 8-degree difference from the center of a major city like Fresno. So, making sure you know what your microclimate is and the additional protection that you want," he said. Jacobsen said those with plants at home also need to be aware of the colder weather. “Things such as succulents or any other kind of tropical plants. I know several homeowners even have bananas out in their yard. Those types of plants, making sure they're covered," Jacobson said, "Whether it's a tarp or any other kind of protection layer.”  He also suggests moving any potted plants into a warmer spot in the home, like a garage. As the valley gets through the next few days of cold temps, Jacobsen is hoping for a shift in precipitation.  He explained, "I think our biggest hope here in the valley right now is as we get through these freezing temperatures is to hopefully see some storm activity rolling through here very soon. As everybody probably knows out there, this is the time of year where we make it or break it when it comes to what our water allocations are going to be, both for agriculture as well as cities. And so, we really want to see some Sierra Nevada snowpack above us here."