Osmo Seaweed Lime pellets are used to raise the pH of your soil.
It is used in lawns to prevent the growth of moss, as moss thrives in lower pH soils. In low pH soils, nutrients like P & K are less available to plants.
Sulphate of iron, although very good at killing moss, lowers the pH of soil, making it ideal conditions for the moss to re-appear. Because of this, when using sulphate of iron, you should always follow up for an application of lime to correct the pH.
It can be used on lawns, vegetable plots, fruit trees, etc. where required.