Many growers consider 6 mil plastic a reliable option for winter use because it offers a strong balance between durability and light transmission. This thickness provides enough insulation to help retain warmth without blocking essential sunlight. It is also flexible enough to handle temperature fluctuations and resistant to tearing when properly installed. When combined with proper fastening and tensioning, 6 mil plastic can withstand snow loads and winter winds effectively. For growers looking for a practical and cost effective solution, this thickness remains one of the most commonly recommended options by Green House Plastic for cold season protection.