Once hydromulched, it's managed the same as a seeded lawn. If the lawn is weedy or has more dead spots than green, it may need renovation. Minor renovation may consist of reseeding bare spots or using weed control. The degree of renovation depends on both physical factors and the appearance of the lawn. It may be necessary to till the soil and add a soil amendment like peat moss or compost.
Amendments create air space in the soil and promote greater root growth for the grass.
Also, by loosening compacted soil, drainage improves and increases the leaching of the soil. Weeds, low soil nutrients, disease and even turf grass mixtures contribute to the poor appearance of a lawn. If weeds take up more than 50 percent of the lawn, renovation is in order. For the best solution to the problem, determine why the weeds took over. If it is compaction, weed control measures followed by reseeding will not succeed.