ST. LOUIS, Mo. -- (KMOV) -- Sensitive plants and vegetation may be at risk on Thursday after another freeze warning has been issued in portions of the News 4 viewing area for the early morning hours.
Wednesday's freeze warning expired at 8 a.m. While temperatures in some areas might have been hovering around the freezing mark Wednesday morning, frost was not widespread. News 4's Ray Preston found frost patches were scattered at best. News 4 Meteorologist Matt Chambers says that's because the dew point is in the 20's and the temperature wasn't low enough for the frost to form.
Now, another freeze warning has been issued for Thursday morning from 3 a.m. to 8 a.m.
News 4 checked with Bob Haegele at Haegele Nursery to see how the low temperatures can affect sensitive vegetation. He says that new leaves and flowers are at risk with these temperatures. Most annuals and hostas are also vulnerable.
Plants that are considered "at risk" need to be brought inside or covered up. Haegele says if you use a sheet or blanket on your outside plants make sure the material hangs all the way down to the ground. It uses the heat rising from the soil to create a "small greenhouse" around the plant.