How do you install Salt and Pepper Rocks (20–40mm)?

Proper preparation helps minimise weed growth, improves drainage, and creates a long-lasting decorative finish. To install your Salt and Pepper Rocks (20–40mm), 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 to create an even, natural-looking finish.

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Salt and pepper rock set from Rock and Soil, 20-40mm mineral rocks for decorative or functional use, shown in the image.

Salt and pepper rock stones from Rock and Soil, 20-40mm size, natural mineral rocks for decorative or culinary purposes.

Salt and Pepper Rock (20-40mm)

In stock - 10 items available

SKU: RSP40

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.

Size

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 (20–40mm) are smooth, decorative pebbles that create a stunning, high-end finish in modern landscaping projects. They are also comfortable underfoot, making them a popular choice for pairing with stepping stones. Our customers commonly use them for:

Garden beds
Decorative ground cover
Pathways and walkways
Around feature plants and trees
Water features
Modern landscape designs

To calculate how much Salt and Pepper Rocks (20–40mm) 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 (20–40mm) are a popular choice for garden beds thanks to their distinctive salt-and-pepper appearance. A feature in their own right, they are also excellent for creating contrast around plants, helping to suppress weed growth when installed with weed mat, and reducing soil moisture evaporation.

Proper preparation helps minimise weed growth, improves drainage, and creates a long-lasting decorative finish. To install your Salt and Pepper Rocks (20–40mm), 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 to create an even, natural-looking finish.

Elevate your landscaping with Salt and Pepper Rock 20-40mm, the ideal black and white rocks for modern garden design. This decorative stone blend features a striking combination of white, grey, cream, and charcoal tones, adding texture, colour, and visual interest to garden beds, pathways, or paved areas. Perfect for pairing with charcoal pavers or steppers, these larger stones create a bold and contemporary look.

Crafted from high-quality Australian limestone, dark basalt, and grey gravel, this mix is durable, long-lasting, and provides excellent drainage, ensuring both style and functionality for your outdoor spaces. For a finer finish, see our Salt and Pepper 20mm mix.