A typical egg shell takes 2-4 weeks to decompose. The egg shell in the compost decomposed quickly.
Consequently, do you need to clean egg shells before composting?
While you don't need to crush eggshells before composting them, doing so will speed up how fast the eggshells break down in the compost. You also may want to consider washing your eggshells before composting them so that you do not attract animals, as well as reducing the slight risk of disease which raw eggs pose.
Can you put eggshells in a compost pile?
The answer to this is yes, you can. Adding eggshells to compost will help add calcium to the make up of your final compost. This important nutrient helps plants build cell walls. While you don't need to crush eggshells before composting them, doing so will speed up how fast the eggshells break down in the compost.
Do egg shells contain phosphorus?
Eggshells contain calcium, phosphorus, sulfur and potassium, which help make plants healthy. If you do not have a pestle, grind the eggshells in a blender. The smaller the eggshell pieces, the faster they will break down in the soil.