The Autumn Lawn Treatment is organic-based, destroys moss, stimulates stronger roots plus greens, thickens & strengthens the grass whilst feeding for 100 days. The treatment will help give the grass resistance to moss, weeds & disease for spring health. It can be applied at 50 to 75 grams per sqm. Applied when no frost, September October & November. NPK 6-6-16 plus (2 ) magnesium plus unique Humifirst. 10kg bag which treats 200sqm.