No, not all plants benefit equally from eggshells. While eggshells offer several advantages, their effectiveness varies depending on the plant's needs.
Benefits of Eggshells for Plants
Eggshells are a rich source of calcium carbonate, a crucial nutrient for plant growth. Calcium strengthens plant cell walls, improving overall structure and disease resistance. This is particularly beneficial for fruiting plants and those that require higher calcium levels.
- Improved Soil Structure: Crushed eggshells improve soil drainage and aeration, creating a healthier growing environment.
- Increased Soil pH: Eggshells help neutralize acidic soil, making it more suitable for various plants. However, this benefit is less significant in soils that are already slightly alkaline.
Plants That Benefit from Eggshells
Several sources indicate that certain plant types especially benefit from eggshells:
- Fruit-bearing plants: Tomatoes, aubergines (eggplants), and strawberries are frequently cited as examples of plants that thrive with eggshell additions. The high calcium content supports fruit development and overall plant health. (Fertilisers made from eggshells are good for plants like tomatoes, aubergines and strawberries).
- Flowers: Many flowers also respond positively to eggshells.
- Succulents: Certain succulents can benefit as well (avoid overwatering, however).
Plants That May Not Benefit
It's important to note that not all plants require high calcium levels. Some plants prefer acidic soil conditions, and adding eggshells could negatively impact their growth. Always research the specific needs of your plants before adding eggshells.
How to Use Eggshells
- Crumble eggshells: Thoroughly crush or grind eggshells before adding them to the soil. This facilitates faster decomposition and nutrient release.
- Incorporate into soil: Mix crushed eggshells directly into the soil during planting or as a top dressing.
- Avoid overusing: While beneficial, excessive amounts of eggshells can harm plants. Use moderation to avoid disrupting soil pH or other crucial soil factors.
