There was a time when putting in a new lawn meant spreading grass seed on a fertilized, relatively flat bit of ground, making sure it was properly watered, and then waiting for the first shoots to appear. Then someone came up with the idea of sod. If it was possible to roll out a carpet in a living room, there was no reason why a carpet of instant lawn couldn't be installed in the same way. Below is a brief definition of sod and three things that make this lawn carpet much more practical than starting from scratch with seeds.
What is Sod?
Sod, sometimes called turf, is made of grass, the underlying root system and a layer of soil. Sod farmers take care of the hard parts including the soil preparation, seeding, fertilizing , watering and cutting. The cutting helps stimulate growth, which creates density. Once the grass has sprouted and taken hold, sod farmers mow their crops frequently, usually every four to five days. One of the exceptions is Kentucky bluegrass, which needs mowing every two or three days to achieve maximum density.
Three Things That Make Sod the Practical Choice
A Fibrous Root System Insures New Grass Growth
Grass has a fibrous root system, which makes sod possible. Instead of having one taproot, such as a carrot or a turnip, a fibrous root system has clusters of thin, hair-like roots that are woven together. The intertwining fibres create a root carpet, which when harvested takes up some of the topsoil. These roots also grow out rather than down, allowing the grass to spread over the lawn's surface. Grass reproduces asexually, using rhizomes found just beneath the surface. New grass shoots sprout out from the rhizomes, creating clones of the original plants. When rolls of sod are laid next to each other, the individual strips eventually are woven together into one big piece.
Sod Holds Moisture Well
Quality sod has sufficient density to hold moisture while it is being shipped and is uniform in color and thickness. Dense sod has enough carbohydrates stored in the root system so the grass easily withstands the cutting, shipping and replanting process. Ideally the sod should be installed within eight hours of being harvested.
Sod is Easy to Apply
Most sods roll out much like a carpet. Thin sod is easier to handle, and is usually stored and shipped in long rolls. The thin sod also puts the roots closer to your topsoil, which encourages faster growth. Sod with a poorer density is sometimes cut a bit thicker and in pieces that are laid down like small area rugs. The downside is this sod takes longer to take root, but the thicker sod is usually more drought resistant.www.teebarsod.com