Q. We don’t understand whether we are to place these 2″ x 3″ (6″ lengths) directly on the soil or are we to nail them to the top sides of the 2″ x 12″s. If they are to rest directly on the soil surface, how far apart should they be spaced? We are using two PVC watering lines per box.
A. We recommend 6″-long pieces of 2″ X 4″‘s. They are placed on the soil surface (usually pressed into the soil slightly), and having two small nails in the top to hold the PVC in place. They should be spaced no more than 8’ apart.