Ground agricultural limestone is most frequently used. The finer the limestone particles, the more rapidly it becomes effective. Different soils will require a different amount of lime to adjust the soil pH value. The texture of the soil, organic matter content and the plants to be grown are all factors to consider in adjusting the pH value. For example, soils low in clay require less lime than soils high in clay to make the same pH change.
Pulverized lime is finely ground.
Granular and pelletized lime are less likely to clog when spread with a fertilizer spreader over turf areas. Hydrated lime should be used with caution since it has a greater ability to neutralize soil acidity than regular limestone. Lime needs should be determined by a soil test. For more information on soil testing, refer to HGIC 1652. Soil samples should be taken in the fall for the succeeding year's garden.