August gardening tips
Mow regularly but do not bother to feed or water; it is a waste of time and will promote vigorous growth that may not stand up to the rigours of winter. Come autumn, feed with a high phosphate content fertiliser to promote root growth and strengthen the grass for winter.
If it has grown out of control whilst you have been away cut it first with the mower blades on the highest setting and then on progressively lower settings until back to the usual level – this will train the grass to grow leafily again. If you are planning a new lawn, start preparing the area by digging and clearing weeds.