- What is sulphate of ammonia anyway?
- What should I consider when using sulfuric acid ammonia?
- What else helps my lawn?
If more moss than grass grows on the lawn, then that is neither nice nor useful. If you don't intervene, the moss will spread unhindered and crowd out the grasses until there are none left.

Iron sulphate is often offered to combat it, it is cheap and seems to work quickly. Appearances are deceptive, however, because iron sulphate is highly corrosive and harmful to human and animal health. It also makes the soil acidic - good for the moss and bad for the lawn. It is better to use sulfuric acid ammonia.
What is sulphate of ammonia anyway?
Sulphate of ammonia is not a weed killer, as one might think, but a fertilizer containing ammoniacal nitrogen and water-soluble sulphur. The combination of these two substances ensures that the fertilizer is not easily washed out even in persistent moisture and enriches it with nitrogen and sulphur. This promotes growth and health of the lawn and moss or clover no longer have a chance or livelihood.
What should I consider when using sulfuric acid ammonia?
Ammonia sulphate lowers the pH of the soil, so it should only be applied when the pH is too high or in the upper normal range. If the soil is too acidic, grass will grow less well, but moss or clover will grow better.
Therefore, it makes sense to test the pH of the turf soil before administering sulphate of ammonia. Incidentally, this test should also be part of regular lawn care in spring. Then you can react before moss spreads on your lawn.
What else helps my lawn?
Provide as much sun as possible on your lawn, then the lawn grass will thrive much more vigorously. For shady and damp corners of the garden, ground covers are much more suitable than lawns. Maybe reconsider your garden planning.
The essentials in brief:
- do not use toxic iron sulphate
- Test soil pH
- use sulfuric acid ammonia in a targeted and well dosed manner
- Loosen moss by scarifying
- Dry the floor if possible
- no shady plants on the lawn
tips
Moss feels particularly at home on moist soil and in the shade. If you deprive it of its livelihood, your lawn will grow better.