A common problem with new lawns in late spring and early summer is the production of seed heads. These growths are woody and tough, and the mower tends to leave a lot behind, so a sharp machine is essential. Mature lawns which are well looked after seed a lot less.Seed heads are also caused by stress – either lack of water and/or nutrients. To determine the cause, check the soil moisture content – dry soil is a tell tale sign – compare with an area where there are no seed heads, often in shaded areas where the evaporation rate is less.Insufficient nutrient levels, particularly trace elements such as iron & manganese, can cause the lawn to produce excessive seed heads. Soils lacking in trace elements can prevent the plant from taking up other nutrients such as Nitrogen, Phosphorous and Potassium, so simply pouring more fertiliser on will not solve the problem.The problem can be lessened and even stopped if the lawn is fertilised with a fertiliser that has sufficient amounts of trace elements and iron and manganese such as Knights Special Mix (available from our retail outlet in 14 Prindiville Dve Wangara) and then given a low mow (not scalped). Most often when the turf grows back after this mow in a couple of days there are noticeably less seed heads.