Gardeners interested in organic fertilizers always looking for natural ways to improve plant growth. Breaking eggshells last long so that all the nutrients they provide are applied slowly. Add egg shells instead of the compost heap. Crush them slightly to accelerate decomposition.
Eggshells are usually calcium carbonate, so many gardeners assume that they ground calcium added, raising the pH of acidic soils. According to a 2005 study at Auburn University, hand crushed egg shells had little effect on soil pH, although egg shells mechanically crushed to a very fine powder is to increase the soil pH as effective as lime. For the home gardener, but pulverizing the shells is fine enough to deliver results is a challenge for lack of suitable equipment. Although adding eggshells, will not hurt to make your garden the earth, the strategy is not significantly change the soil pH.
Eggshells have micro-nutrients, such as nitrogen, found in lingering egg material. These nutrients can benefit easily into the ground. Unfortunately gardener would have to add egg shells in large quantities to produce meaningful results. Eggshells not replace soil amendments, such as compost or manure or fertilizer, for providing the nutrients plants need.
Jeff Gillman at Washington State University presented the idea that eggshells deter snails. After Gillman eggshells are not effective slug repellents. The idea of using egg shells as a slug deterrent was probably because kieselguhr not deter slugs. This product has sharp edges, to pretend like eggshells, but it's not the sharp edges to deter the worm, but the desiccant properties of diatomite.
Although eggshells do not harm the soil, they lack some real advantages for planting. Eggshells spread over the area planted to create a messy look, as well. Compost eggshells instead. When combined with other plants and food scraps, they will break in a rich, nutrient-rich plant foods.