All lime is not equal. The finer the lime, the faster it will take effect. At best, 50% of a load of ground limestone will pass through a 350µm sieve. The rest will be larger chunks that will take years to break down. In contrast, 100% of the powder in granulated lime passes 350µm, with 99.7% passing 125µm. The pellets dissolve instantly on contact with moisture, making granulated lime 100% effective in raising soil pH.