Rock Phosphate

What Is Rock Phosphate: The Use Of Rock Phosphate Fertilizer In Gardens

Rock phosphate for gardens has long since been used as a fertilizer for healthy plant growth, but exactly what is rock phosphate and what does it do for plants?

What is Rock Phosphate?

Rock phosphate, or phosphorite, is mined from clay deposits that contain phosphorus and is used to make organic phosphate fertilizers that many gardeners utilize. In the past, rock phosphate was used alone as a fertilizer, but due to a lack in supply, as well as low concentration, most applied fertilizer is processed.

There are a number of types of rock phosphate fertilizer available on the market, some are liquid, and some are dry. Many gardeners swear by using rock-based fertilizers such as rock phosphate and bone meal. These nutrient-rich fertilizers work with the soil rather than against it as chemical fertilizers do. The nutrients are then made available to plants at a steady and even rate throughout the growing season.

What Does Rock Phosphate Do for Plants?

These fertilizers are commonly called “rock dust” and provide just the right amount of nutrients to make plants strong and healthy. The use of rock phosphate for gardens is a common practice for both flowers as well as vegetables. Flowers love an application of rock phosphate early in the season and will reward you with big, vibrant blooms.

Roses really like rock dust and develop a stronger root system and more buds when it is used. You can also use rock phosphate to encourage healthy tree and lawn root system development.

If you use rock phosphate in your vegetable garden, you will have fewer pests, greater yields and richer flavor.

How to Apply Rock Phosphate Fertilizer

The best way to apply Rock Phosphate is through Complete Organic Fertilizer which is balanced. Rock dusts are best applied in early spring. Aim for 500gm per 10m2 , but be sure to read about application rates on the package label as they may vary.

Adding rock phosphate dust to compost is a great way to apply it because the microbes in the compost consume it and then, because they have a short lifespan, make these nutrients more readily available for plants. Use this compost heavily in your vegetable garden and the nutrients will make up for what is removed when you harvest.


Rock Phosphate

No Lock Up

Ironclad Goodness Rock Phosphate is a bio-friendly, colloidal clay-based calcium phosphate that can never lock up, in stark contrast to all other phosphate sources. This exceptional fertiliser includes 8 – 9% phosphorus, 19.3% calcium, a high analysis of silicon and a rich lode of trace elements. A microbe friendly bio-phosphate, which is an integral part soil regeneration. This is one of the few phosphate sources that do not have problems with the heavy metal cadmium and it becomes plant-available in a fraction of the time involved with reactive rock phosphate.


tick    All elements are in colloidal form. This provides ongoing plant-availability and ensures that none of the component elements can ever become locked up.
tick   All phosphate sources include the heavy metal cadmium in varying levels. This is proving a major environmental problem, with consumers becoming more aware of the problem and demanding cadmium-free produce.
tick   Exceptional trace element levels.
tick   Helps re-mineralise soils.
tick   Colloidal minerals provide health benefits to soil microbes.
tick   Colloidal calcium component (approx. 20%) is much more plant available than limestone.
tick   High in silicon. Research suggests increased brix levels in plants are related to the presence of silica.

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Available in Sizes
2.9kg$5.45 AUD 
 Plus postage to anywhere in Australia

4.8kg$9.00 AUD
9.6kg$18.00 AUD
25kg$40.65 AUD

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