What Kind of Plastic Should I Cover My Tomato Plants

Tomatoes are one of the most popular garden plants, loved for their juicy, flavorful fruit. To grow healthy tomato plants, it is important to protect them from pests, diseases and harsh weather conditions. One way to do this is by covering your tomato plants with plastic. But what kind of plastic should you use? There are several options available, each with their own benefits and drawbacks.

Polyethylene Film

Polyethylene film is a common plastic used to cover tomato plants. It is a lightweight, flexible material that is easy to handle and install. Polyethylene film comes in various thicknesses, typically ranging from 1 to 6 mil. The thicker the plastic, the more durable it is and the longer it will last. A clear, transparent polyethylene film can be used to create a greenhouse effect, trapping heat and moisture around the plant, thus promoting growth.

However, polyethylene film is not very breathable, which can lead to moisture buildup and fungal infections. Additionally, it is not very resistant to punctures and tears, making it vulnerable to damage from wind, hail and other elements.

Row Cover Fabric

Row cover fabric is another option for covering tomato plants. It is made of lightweight, durable material that is breathable and allows air and water to pass through. Row cover fabric is ideal for protecting plants from insects, birds and other pests, as it creates a physical barrier between them and the plant.

Row cover fabric is available in various weights, ranging from light to heavy. The heavier the weight, the more protection it provides against cold and frost. Row cover fabric is also easy to install and remove, making it a great option for seasonal use.

However, row cover fabric is not as effective as polyethylene film in trapping heat and creating a warm, humid environment around the plant. It is also not as durable as polyethylene film and can be prone to damage from wind and other harsh weather conditions.

Mulch Film

Mulch film is a plastic film that is placed on the soil around the base of tomato plants. It is designed to suppress weeds, conserve moisture and regulate soil temperature. Mulch film is available in different colors, including black, white and red.

Black mulch film is the most common type and is effective in heating up the soil and conserving moisture. White mulch film reflects sunlight and helps keep the soil cooler. Red mulch film is believed to stimulate plant growth and development.

Mulch film is durable and can last for several years, making it a cost-effective option for long-term use. However, it does not provide as much protection against pests and diseases compared to polyethylene film and row cover fabric.

Biodegradable Film

Biodegradable film is a type of plastic film that is designed to break down naturally over time. It is made of organic materials, such as cornstarch, and is an environmentally-friendly alternative to traditional plastic films. Biodegradable film is available in various thicknesses and can be used to cover tomato plants.

Biodegradable film is breathable and allows air and water to pass through, promoting healthy plant growth. It is also resistant to cold and frost, providing some protection against harsh weather conditions. However, biodegradable film is not as durable as other types of plastic films and can break down quickly if exposed to sunlight and moisture.

Conclusion

Choosing the right type of plastic to cover your tomato plants depends on your specific needs and preferences. Polyethylene film is a great option for creating a greenhouse effect, while row cover fabric is ideal for protecting plants from pests. Mulch film is a cost-effective option for conserving moisture and regulating soil temperature, while biodegradable film is an eco-friendly alternative to traditional plastic films. Whichever option you choose, make sure to carefully consider your needs and budget before making a purchase.