Marathon Lite is grown in an organic mat, which has been designed for its moisture holding capacity. The Marathon Lite mat holds more water than soil and therefore needs less frequent irrigation during the early establishment period. Once the turf begins to root into the soil, irrigating Marathon Lite is the same as the field-grown Marathon sod. As a general rule, you can water the Marathon Lite once per day for the first three weeks. If dry spots appear in the lawn during the afternoon, the irrigation time should be increased. If dry spots persist, an irrigation uniformity problem is likely, and an additional sprinkler head may be required. After the first three weeks, you should begin to taper back to once every two or three days, depending on how quickly the sod is rooting.