Farmers protect their crops from frost using agricultural plastic products in several ways. One common method is by using plastic mulch, which helps to retain heat in the soil, thereby reducing the risk of frost damage. Another technique is employing plastic row covers or tunnel films to create a microclimate around the plants, keeping them warm and protected. These covers can be removed as temperatures rise, allowing for natural light and air circulation. Frost blankets, made of plastic or other materials, are also used to cover crops directly, providing insulation against cold temperatures. These practices help to maintain a consistent temperature around the crops, reduce the impact of frost, and ensure a successful harvest.