We know that many people do not like leaving grass clippings on a lawn but it does the lawn a world of good. This alone can reduce the amount of fertilizer you need by half. Bag the first and last mow of the season, though, to reduce weeds.
Add white clover seed as it adds nitrogen naturally. Converting just 5 % of your lawn to clover can completely eliminate the need to fertilise.
“Top‐dress" the lawn. Spread 1cm of compost over your lawn in spring and autumn and make sure you rake it in properly.
Water less, but longer giving it a good soaking. A rain gauge will help you with this as you need only water if you have had less that 3cm per week.
Move your mower setting to high. Mowing too low makes grass susceptible to weeds, pests and diseases.
Identify your grass species. If you’ve never looked closely at your grass, this might take a little effort – but here’s the reward. This is the only way to really know what will keep your specific grass healthiest. One kind of grass is best seeded in spring; another, in autumn, for instance. So pull up a sprig from your lawn and identify it.
The best choices are slow‐release, water insoluble fertilisers that help roots develop and that wash away less easily. Always apply according to the instruction amount on the product as they vary in strength.
Try use organic materials such as compost and kelp.
Never apply fertiliser if you are expecting rain as controlled watering is necessary to allow fertiliser to soak in, a huge rain storm will wash away much of what you’ve applied.
Do not apply phosphorous unless your soil test indicates you need it.
Sweep any fertiliser off paved areas before it washes away. Create your own compost is easy and cheap by using kitchen scraps, no egg shells though. Use a bin or a section of your garden away from the home and use paper, leaves, food peels and other things that we throw away.