Is Plaster of Paris Good for Plants?

By Robert Palmer

If you’re an avid gardener, you may have heard of using plaster of Paris in your garden. Plaster of Paris is a fine powder made from gypsum that can be used for a variety of purposes.

But is it good for plants? Let’s find out.

What is Plaster of Paris?

Plaster of Paris, also known as gypsum plaster, is a white powder made from gypsum. It is created by heating gypsum to about 150 degrees Celsius until it loses its water content and becomes a fine powder. When mixed with water, Plaster of Paris forms a paste that can be used for casting and sculpting.

How Can Plaster of Paris Benefit Plants?

Plaster of Paris can benefit plants in several ways. One way is by adding calcium to the soil. Calcium is an essential nutrient for plant growth and development, and plaster of Paris contains high levels of calcium.

When added to the soil, plaster of Paris can help balance soil pH levels by neutralizing acidic soils. It can also improve soil structure and drainage by breaking up heavy clay soils.

How to Use Plaster of Paris in Your Garden

To use plaster of Paris in your garden, follow these steps:

Step 1: Select an area in your garden where you want to add plaster of Paris. Step 2: Mix the plaster with water according to the instructions on the package.

Step 3: Spread the mixture over the soil surface or dig it into the soil. Step 4: Water the area thoroughly.

Note:

  • Avoid adding too much plaster as it can make the soil too alkaline.
  • You should also avoid using plaster near plants that are sensitive to high levels of calcium.

Conclusion

In conclusion, plaster of Paris can be beneficial for plants when used in moderation. It can add calcium to the soil, balance soil pH levels, and improve soil structure and drainage.

However, it should be used with caution as excessive use can have negative effects on plant growth. So, if you want to use plaster of Paris in your garden, make sure to follow the instructions carefully and use it in moderation.