Harris Seeds Row Cover

The slits are engineered to open slightly when the air warms up during the day, allowing excess heat and moisture to escape. As temperatures drop in the evening, the material naturally seals back up to trap warmth and protect your plants from frost.

Yes, we highly recommend using wire tunnel supports or hoops to keep the material elevated above your crops. This prevents the plastic from resting directly on your plants, which can cause damage or restrict growth.

This cover is designed to raise daytime temperatures by 10-30°F compared to the ambient air. It also provides reliable frost protection down to 1-4°F, making it a great tool for extending your season in cooler climates.

While the polyethylene film is durable, its longevity depends on how carefully you handle and store it. If you remove it gently at the end of the season and store it away from direct sunlight, you may get multiple seasons of use out of it.

No, the material is slightly translucent, allowing sufficient light transmission for photosynthesis while still providing the necessary thermal benefits. Your plants will still receive the light they need to grow, just in a warmer, protected environment.

While its primary purpose is temperature regulation and frost protection, the physical barrier of the row cover does provide a basic layer of defense against some wind-blown pests. However, it is not specifically designed as an insect netting.