Use egg shells as fertilizer? Absolutely right! Because they are full of calcium. It is an essential nutrient for all plants. In addition, such a fertilizer has other advantages such as saving money and protecting the environment. Below you will find some important information and tips in this regard. Learn how you can easily make your own liquid fertilizer from eggshells.
Egg shells – a waste product that can still do a lot
How does the calcium in eggshell fertilizer help your plants?
Whether you grow vegetables, have houseplants or maintain a flower bed, calcium is essential for the growth of any plant. It helps plants produce healthy new tissues like roots, shoots, leaves and buds. Mature plants need calcium to stay healthy. In fact, this plant-based micronutrient helps maintain the structure of cell walls.
In addition, the right amount of calcium can prevent blossom end rot. As seasoned gardeners know, this frustrating disease can afflict vegetables like tomatoes, peppers, and cucumbers. Although many conventional fertilizers contain calcium in the formula, cold weather or high humidity can affect your plants’ absorption of calcium and lead to a deficiency. For this reason, add an occasional boost of calcium eggshell fertilizer to all your plants, especially right before they go into a growth cycle or produce bud.
Egg shells as fertilizer – a sustainable and cheap idea for the garden
Rich harvest with little effort
Why Eggshell Fertilizer In Liquid Form Is Better Than Many Other Methods?
You’ll often see advice from garden and houseplant bloggers and YouTubers regarding the use of eggshells as fertilizer. Some say to roughly mash eggshells and add them to water to make eggshell tea. Others advise using crushed egg shells as a soil amendment or as an ingredient in compost.
This advice won’t harm your plants, but it might just be a waste of time. Eggshell calcium must be in a form that your plants’ roots can more easily absorb. It takes a long time, in principle, for whole eggshells to break down to this point, even in water or soil.
You should at least very finely chop eggshells
To make a water-soluble calcium eggshell fertilizer that your plants can use right away, you need a small amount of white vinegar to convert the insoluble calcium carbonate into the soluble calcium. Then simply add the solution to the water you normally use to water your plants.
Egg shells consist mainly of calcium carbonate (CaCO3) plus small amounts of calcium phosphate and magnesium carbonate. Calcium carbonate is insoluble in water, which plant roots use to absorb nutrients. White vinegar contains about 3% acetic acid. When the acetic acid reacts with the calcium carbonate, water-soluble calcium, water, and carbon dioxide remain. A common question is whether the vinegar will make your eggshell fertilizer too acidic to use on your plants. Well, don’t worry about that, because during the reaction, the calcium in the eggshells effectively neutralizes the pH of the vinegar.
Eggshell fertilizer works best in liquid form
Eggshell Fertilizer: The Guide to Liquid Calcium Fertilizer
- Coffee grinder or rolling pin and wooden cutting board
- small bowl or casserole dish
- Measuring cup with spout
- clean, empty jug (4L), a plastic jug also works well
- Wide mouth jar or container with lid
- 10 eggshells or more
- white wine vinegar
- 4 L water (rainwater, distilled or filtered water is best)
That’s how it works:
- Rinse your eggshells with cold water. It’s okay if they still have some egg white and/or cuticles.
- Place the eggshells in a single layer on a baking sheet and dry in the oven on the lowest setting, typically around 85C, for about 2 hours. The oven does not need to be preheated.
- Remove the egg shells from the oven and let them cool.
- Then break the eggshells into smaller pieces with your fingers. Then grind them into a fine powder using a coffee grinder. Alternatively, you can use a rolling pin on a wooden cutting board to pound the shells into powder.
A mortar could also provide the best help here
- Place the crushed egg shells in the wide-mouth container.
- Scoop out 2 tbsp eggshell powder for every gallon of water you plan to use for your plants and add to the bowl.
- Add an equal amount of white vinegar to the crushed eggshells. Using a non-metallic stir stick, stir the mixture to allow the vinegar and eggshells to react.
- Leave the mixture on for a minute or two, then give it another good stir. Let these sit for about an hour to allow the vinegar and eggshells to complete the reaction.
- Place 4 tbsp of the eggshell/vinegar solution in a measuring cup and swirl in some water for easy pouring. Pour the solution into the 4 liter jug and then fill it almost to the brim with water. Put the lid back on and shake well.
- Then fill your watering can from the 4 liter jug and water your plants with your eggshell fertilizer rich in calcium. The results will soon be seen.
A valuable egg shell fertilizer for all garden plants
Collect eggshells and let them work wonders
If things need to go faster, simply crushed egg shells also have a positive effect on the soil
Egg shells are also ideal as mini flower pots for healthy offspring