How to Make Bonemite at Home

DIY bonemite for your garden

October 13, 2025 | 10 min read
A gardener preparing bonemite in a Staffordshire garden

Bonemite, a blend of bone meal and vermiculite, provides essential nutrients and improves soil structure. Let's explore how you can make this at home.

Quick Answer

Mix bone meal with vermiculite at a 1:1 ratio to create bonemite, enhancing soil nutrition and moisture retention.

Why Use Bonemite in Your Garden?

Bonemite is a fantastic soil amendment that combines the benefits of bone meal and vermiculite. Bone meal provides phosphorus and calcium, crucial for root development and flowering. Vermiculite improves soil aeration and moisture retention.

  • Enhances soil nutrition with phosphorus and calcium
  • Improves moisture retention and aeration
  • Promotes healthy root growth and plant development

Materials You'll Need

Before you start, gather the following materials:

  • Bone meal (available from garden centres)
  • Vermiculite
  • A large mixing container
  • Protective gloves and mask

Step-by-Step Guide to Making Bonemite

1. Prepare Your Materials

Ensure you have a clean, dry area to work in. Put on your protective gloves and mask to avoid inhaling fine particles.

2. Mix the Ingredients

Measure equal parts of bone meal and vermiculite. For example, use one litre of each. Combine them in your mixing container.

3. Blend Thoroughly

Stir the mixture until the bone meal and vermiculite are evenly distributed. This ensures that each scoop contains a balanced amount of nutrients and soil conditioners.

4. Store Properly

Store your bonemite in an airtight container to keep it dry and ready for use. It can be stored for several months.

When and How to Apply Bonemite

Bonemite is best applied during the growing season, typically from March to September in the UK. Here’s a quick guide:

Month Application Rate Notes
March-May 50g per square metre Apply during planting
June-August 30g per square metre Side-dress plants
September 50g per square metre Prepare soil for winter

Frequently Asked Questions

What plants benefit most from bonemite?

Bonemite is particularly beneficial for flowering plants and root vegetables, as it enhances root growth and blooming.

Can I use bonemite in potted plants?

Yes, you can use bonemite in potted plants. Just ensure you mix it well with the potting soil to avoid nutrient concentration.

Is bonemite safe for pets?

While bonemite is generally safe, it's best to keep pets away from the area until the bonemite is well mixed into the soil.

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