This week, Erin Fairbanks talks low tunnels with Ben on the Rooftop Farming Update with Ben Flanner. Find out what a low tunnel is, and how farmers use them to extend crop seasons and protect growth from cold temperatures.

David and Melinda Rowley, along with their daughter Sorrel, are the farmers at Monkshood Nursery and Gardens. David attended Hadlow College in England studying commercial horticulture while Melinda attended Cornell University and studied horticulture. Together, they started a potted herb nursery in 2001. Two years later, they leased an 82...