This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
A very good method of growing individual strawberry plants that will produce large clean berries is to provide a covering constructed from a board 10 in. square with a 3-in. hole bored in the center. This covering is placed over the plant, as shown in the sketch, to keep down weeds, retain moisture, and to make a base for the ripening berries. A shower cannot spatter dirt and sand on the growing fruit. The rays of the sun beating on the surface of the board will aid in the ripening.
If a log can be obtained, the boards can be made better and more quickly. Disks about 1 in. thick are sawed from the log and holes in their centers either cut with a chisel or bored, as desired.
Ill: Growing Strawberries on the Surface of a Board Where They will Ripen Fast and Keep Clean
The grain of the wood will be vertical and no warping will take place - Contributed by Johnny Banholster, Gres-ham, Oregon