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 a much safer 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*

Black Grit 18kg will be sent as a single item and is not included in any free shipping promotion. Any other items ordered with the Black Grit 18kg will be shipped separately. If your order totals above $200 & includes a Black Grit 18kg bucket, a shipping fee will apply to the whole order.

Our Click and Collect locations have different operating hours. Check our FAQ’s page for details on each location. Once your order is placed, we will send you an email confirming your order has been received. You will receive another email confirming when your order is ready for pickup. Please pick up your items within one week of receiving the confirmation email. If you need more time to collect your order, please contact your selected store to make arrangements. Make sure to check stock availability for your chosen location on each product page before you reach checkout. You cannot complete your order unless all items are available at your selected location. For more details, visit our stockist page and filter for the Click and Collect locations to find details about each location. You can also check out our FAQ page for additional information.