To prepare for sowing, clear the area of vegetation in advance and cultivate the top 5cm (2"). There is no need to dig too deep as doing so would also bring potentially unwanted weed seed to the surface. In an ideal world, allow any existing seed to germinate and kill/remove the seedlings. Rake over the area to create a fine tilth and sow the seeds lightly on the surface. Lightly rake or tread in the seed. Do not bury the seed too deep as it may hinder germination. Keep moist.