Rock Mineral Fertiliser and Soil Improver

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Available In: 5kg

RICHGRO ROCK MINERAL FERTILISER AND SOIL IMPROVER is a natural slow release non leaching fertiliser which stimulates microbial activity essential to soil and plant health and vitality. It releases trace elements to create strong healthy plants that are better guarded against plant diseases. It contains Australian volcanic mineral and rock phosphorus to achieve natural, organic growth.



  • Organic boost – beneficial microbes
  • Slow release – 3 months feed
  • Non leaching
  • Soil and plant booster



This product is exclusive to Bunnings.

How to Use

ROSES & ORNAMENTALS: Sprinkle 125g per square metre of garden bed every 8-12 weeks as required.

FRUIT TREES: 250g per year age of tree up to 4kg.

1st year – split into several smaller applications.

2nd year – split into early and mid-season applications.

VEGETABLES: Sprinkle 125-175g per square metre of garden bed every 6-8 weeks as required.

NATIVES: 50g per square metre September, November, January, March or as required.



What are Rock Minerals?
It is a natural mineral product containing microbes and trace elements. Its use improves soil structure by building soil fertility and allowing the microbes to interact with the soil, capturing nutrients, increasing root growth and protecting from diseases.

Where do they come from?
This product is manufactured from natural materials that are friendly to the environment. Using volcanic bedrock located deep beneath the surface which has been covered by decaying soil and matter over time, it is gathered, prilled and impregnated with beneficial microbes. This is all manufactured in Australia with the minerals coming from
Queensland and blended and bagged in Western Australia.

What’s in them?
These minerals contain volcanic and sedimentary rock which are full of trace elements and minerals such as Boron (B), Iron (Fe), Manganese (Mn) Copper (Cu), Zinc (Zn) Cobalt (Co) and Molybdenum (Mo), vital for plant health and great for you as well. These Rock Minerals are great homes for Microbes. They have been impregnated with carbon into the Rock Mineral prills. Activated when wet, the Microbes work with the fertiliser and humates in the soil.

Difference between Rock Minerals and Rock Dust?
Lots of people are claiming that they can use rock dust, which is often left over crusher dust with little mineral value or from other places which has very little elemental value.
Rock Minerals are rock elements mined from Volcanic Base and Sedimentary rock. Whilst they are technically different, most people will consider the term the same and hence when asking for rock dust, they often mean Rock Minerals.

What are the benefits?
• Better soil rich in organics – The microbes work with the soil, creating strong root structures.
• Tougher plants better able to resist diseases
• More flowers and fuller thick and greener foliage and lawn
• Healthier looking plants

Have these been proven?
Actually for over 20 years these fertilisers have achieved outstanding results in turf growing and maintenance, intensive horticulture, broad acre farming, Amenity horticulture (councils) and home gardens.
Being pH Neutral they work in a number of different soils across Australia.

Can it be used on Natives?
Yes, 50gm per square metres.

Is it good for clay soil?
Yes, in fact it will help soils work better by holding the nutrients allowing the plant to take it up over time. Also the microbes will break down the clay slowly as the roots develop.

Gardening Solution:
Rock Minerals Fertiliser & Soil Improver



For your Pots, Garden or Lawn, enter the dimensions of the area or pot size and hit Calculate.

Note : Guide only. Refer to pack for usage rates.