Soil Health, Fertility and Sustainability
- More Flowers
- More Fruit
- Stronger, Healthier Plant Growth
- Calcium
- Magnesium
- Silicate
- Phosphate
Black Grit is a fused calcium magnesium silicate phosphate soil amendment/fertilizer that has been used successfully around the world for the last century in low fertility acid soils where it increases pH and CEC (Cation Exchange Capacity) and provides and helps unlock P in the soil.
Black Grit provides soil amendment and fertilizer together in ONE application to acid soils. It assists in increasing ph to a sustainable level whilst providing useful amounts of macro-elements Ca, Mg, Si and P as well as a range of micronutrients. It is not water-soluble therefore does not leach or wash away.
Black Grit is made from naturally occurring minerals not chemically treated. It works with the natural soil chemistry to digest soil acid as well as providing minerals in a plant-available form. It is high in plant available calcium (24%), magnesium (10%) silicon (11%), and phosphorus (8%) and also acts as an alternative to lime.
Black Grit can be used as a starter in a crop or broadcast over pasture at any time of the year.
It has taken decades in some cases for soils to deteriorate, change also takes some time, but the sooner Black Grit is applied the sooner it can get to work in the soil. Typically, within 24 hours of application with some moisture Black Grit will start to digest soil acid and provide macronutrients to the plant.
APPLICATION RATES (Hand Measurements Only) 1 handful = approximately 50g
- Garden beds: Apply 1 handful per m² and lightly mix into topsoil
- Pots & planters: Apply a small pinch to ¼ handful depending on pot size
- Top dress: Reapply every 3–6 months or as needed
HOW TO APPLY
- Seedlings: Mix a small amount into soil before planting. Water well after transplanting.
- Established Gardens: Move mulch aside, sprinkle around plants, lightly scratch in, then water well.
- Trees & Shrubs: Apply 1 handful per m² in a wide ring under the dripline, rake lightly and water deeply.
COMPOSITION
Natural fused minerals containing:
Calcium (24%)
Magnesium (10%)
Silicate (11%)
Phosphate (8%)
plus trace micronutrients.
*Apply 1/4 strength to Natives*
Is Black Grit organic?
Black Grit is an organic controlled release, sustainable fertiliser that will not burn your plants.
How often do you use Black Grit?
Every 3 – 6 months
What is Black Grit made from?
Black Grit 0-8-0 is a blend of Rock Phosphate and Limestone that has been used successfully around the world for the last century in low fertility acid soils where it increases pH and CEC (Cation Exchange Capacity) and provides and helps unlock P in the soil.
Is Black Grit a good fertiliser for fruit trees?
Black Grit is a fantastic, controlled release, organic fertiliser for fruit trees. It will create stronger growth, better flowering and bigger and juicer fruit. Black Grit provides long lasting plant nutrient availability with low run-off or leaching.