What are Salt and Pepper Rocks (20mm) used for?

Our Salt and Pepper Rocks (20mm) are a mix of dark charcoal and white stones that create a stunning, modern landscaping finish. They are suitable for use in:Garden bedsDecorative ground coverPot and planter toppingsAround feature plantsPathwaysWater features

How do you install Salt and Pepper Rocks (20mm)?

Proper preparation helps minimise weed growth, improves drainage, and creates a long-lasting decorative finish. To install your Salt and Pepper Rocks (20mm), we recommend following these steps for a neat and professional finish:Prepare and level the area.Install weed mat to help prevent weed growth.Install garden edging to keep the stones neatly contained.Spread the stones evenly to the desired depth.Rake the stones or position individual stones by hand to achieve a natural-looking finish.

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Salt and pepper rock stones, 20mm size, from Rock and Soil, showing textured natural mineral rocks for decorative or culinary use.

Close-up of Rock and Soil Salt and Pepper Rock, 20mm gravel stones with natural textured surface for decorative or culinary use.

Salt and Pepper Rock 20mm

In stock - 4 items available

SKU: RSP20

Regular price $720.00 inc. GST

Cubic Metre Calculator

Need to calculate how much you’ll need? Use our cubic metre calculator below.

Length

Width

Depth

Use the calculated volume as a guide to select your quantities below. Products on our website are sold in either 1m³ or 1/3m³ (0.333m³) increments, so you may need to combine the 1m³ and 1/3m³ options to match your required volume as closely as possible. If your required quantity cannot be accurately matched using these increments, please contact our office for assistance.

Volume Value

1 ㎥ ⅓ ㎥

Quantity

For ordering ¼㎥, ⅓㎥ and ½㎥ quantities please call the office on (07) 3245 5677

Please note that deliveries to postcode 4178 (Fishermans Island) may incur additional toll fees.

Bulk Order Delivery: Large quantities or multiple bulk products may incur additional delivery charges. We'll contact you before applying any extra charges.

Frequently Asked Questions

Our Salt and Pepper Rocks (20mm) are a mix of dark charcoal and white stones that create a stunning, modern landscaping finish. They are suitable for use in:

Garden beds
Decorative ground cover
Pot and planter toppings
Around feature plants
Pathways
Water features

To calculate how much Salt and Pepper Rocks (20mm) you need for your project, measure the length and width of the area where the stones will be placed.

Next, determine the desired depth of the stones. The required depth will vary depending on your project and the area you need to cover.

Once you have your length, width, and depth measurements, you can use our cubic metre calculator above or calculate the volume manually using the following formula:
Volume = Length × Width × Depth

Recommended Depth: As a general guide, we recommend laying decorative stones at a depth of 40–50mm. However, the ideal depth will depend on your project and the size of the stones. Larger stones may require a deeper layer for even coverage, while smaller stones can often be laid slightly thinner.

Yes, Salt and Pepper Rocks (20mm) are perfect for decorative pathways, garden beds, and landscaped areas. Our customers often use them around pavers to create a high-end look.

Their compact size and smooth finish create a neat, uniform appearance while also providing a comfortable surface underfoot.

Proper preparation helps minimise weed growth, improves drainage, and creates a long-lasting decorative finish. To install your Salt and Pepper Rocks (20mm), we recommend following these steps for a neat and professional finish:

Prepare and level the area.
Install weed mat to help prevent weed growth.
Install garden edging to keep the stones neatly contained.
Spread the stones evenly to the desired depth.
Rake the stones or position individual stones by hand to achieve a natural-looking finish.

Add a striking and contemporary look to your garden or landscaping project with our black and white rock blend, Salt and Pepper Rock 20mm. This decorative rock mix features a balanced blend of grey, white, cream, and black tones, creating a modern and sophisticated aesthetic. Perfect for pairing with charcoal pavers, steppers, or concrete features, these rocks bring texture, colour, and visual interest to garden beds, pathways, or paved areas.

Made from a high-quality combination of Australian limestone, dark basalt, and grey gravel, these stones offer durability and excellent drainage while enhancing the overall design of your outdoor space. For larger projects or bolder textures, check out our Salt and Pepper 20-40mm mix.