There are many variables to consider when determining how turf should be established on a site. There are advantages and disadvantages to each method.
Plugging...This method is best suited for a site which does not have automatic irrigation. The plugs (sod cut into small squares) are capable of establishing with limited irrigation. However, there are many disadvantages to plugs. First of all, it is very labor intensive (a 2,000 sq. ft. lawn will typically require 1,200 plugs to be planted!). Second, using the plugging technique will leave bare soil exposed for several months, which will lead to erosion, mud, dust, and weeds. Finally, once the plugged lawn finally fills in (it takes a LONG time), the plugs you started off with will have a denser root mass than the surrounding areas, thereby creating a "checker-board" effect. The "checker-board" effect is not only an eyesore, it is a maintenance complication.
Hydroseeding...Seed (or sprigs), fertilizer and mulch are applied in one step. This process is usually less costly than plugging (less labor). When done by an experience contractor, hydroseeding will produce a quality stand of turf very quickly, while also limiting erosion, mud, dust, and weeds.
Hawaiian Hydroseeding is a name to reckon with for providing customers with the best options for designing, preparing, and installing both residential and commercial lawn systems in Hawaii.