40mm Green Slate

Our Green Slate is a customer favorite in our extensive decorative stone collection. Despite its name, this slate features a striking mix of grey and green tones, with subtle silver highlights that create a beautifully natural look. Each piece showcases rustic, flat shapes with angular finishes, adding texture and character to any outdoor space.

Quarried in North Wales, this environmentally friendly slate is lime-free and recycled, making it a sustainable choice for your garden projects. With an average size of 40mm, it’s versatile for various landscaping uses. Its subtle colors become more vivid when wet, revealing deeper shades of grey and green for an enhanced appearance. Additionally, it’s completely fish-friendly, making it a safe and stylish option for ponds and water features.

Perfect for adding a natural yet polished touch to your garden, Green Slate is an excellent choice for pathways, borders, or decorative accents. Its unique coloring and eco-conscious origin make it both a practical and aesthetic addition to any outdoor design.

Green Slate stones are available in a range of sizes, perfect for creating various features. You can find them in 20mm stones, 40-75mm Paddlestones and as Rockery.

40mm Green Slate Features

• Great for garden borders or features
• Best-seller for years
• Locally-sourced
• Fish-friendly

40mm Green Slate for Your Garden

Green Slate decorative stones are a fantastic way to add a finishing touch to your garden while maintaining a natural and cohesive look. With their subtle blend of grey and green tones, they bring texture and depth to outdoor spaces, enhancing the beauty of your landscaping.

Due to their slightly larger size, Green Slate stones are ideal as a decorative feature rather than for high-traffic areas like pathways or driveways. A popular application is using them to surround hard landscaping features such as garden paving, patios, or grass areas. Their angular finish adds a rustic charm, making them a perfect complement to natural or modern designs.

Green Slate is also highly effective for front gardens, especially for those seeking a low-maintenance solution. If you have limited time for garden upkeep but still want an attractive appearance to greet guests, Green Slate works wonderfully. Simply lay the slate over a weed fabric to keep maintenance minimal. It can also serve as an attractive border around the front or sides of your house, adding a polished and tidy aesthetic to the overall design.

This versatile and eco-friendly option is perfect for creating an effortlessly stylish garden.

40mm Green Slate for a Garden Pond

If you're lucky enough to have a garden pond, Green Slate makes an ideal decorative addition! The natural blend of green and silver hues is most striking when the slate is wet, making it perfect for use around water features. Many people use Green Slate both around the outer edge of the pond and submerged just below the waterline to enhance its aesthetic appeal.

Since Green Slate is completely lime-free, it's safe to use in ponds inhabited by fish and other wildlife. It provides not only a decorative touch but also a practical feature, such as creating steps for small creatures like frogs or birds. Additionally, layering Green Slate around the pond can help create a multi-tiered, natural look, offering both function and beauty to your outdoor space.

How to Buy 40mm, Green Slate

Available Pack Sizes

20kg maxi bags 

850kg bulk bags (approx weight)

This stone can be collected for free at one of our depots in Wimborne, Bournemouth, Christchurch or Dorchester, or these garden stones can be delivered nationally to anywhere in the UK.

You can use our Stone Calculator to work out how much of this stone you need - simply enter the measurements of your garden, the depth at which you want to lay the stone and it will work out how much you need!

How to Create a Garden Pond 

Whether you're envisioning a sleek, modern pond as a focal point for your garden or a natural pond to encourage wildlife, building your own garden pond is easier and more affordable than you might think. Follow this step-by-step guide to create your dream pond:

1. Choose the Perfect Spot

Start by selecting the best location for your pond. Avoid areas directly under trees to minimize falling leaves, which can contaminate the water and require constant cleaning. Ideally, pick a spot with a mix of sunlight and shade. A shaded pond helps prevent overheating, which can affect both wildlife and plant life.

2. Decide on Size and Type

Determine the size and style of pond you want. For a ground-level pond, consider purchasing a pre-formed plastic pond from a local garden center. Mark the area with spray paint to match the pond's dimensions.
If you'd prefer a raised pond, use retaining sleepers lined with a plastic sheet, or get creative and upcycle items like an old washing basket for a unique look.

3. Prepare the Area

For ground-level ponds, dig out the area to the desired depth. Place the pre-formed pond in the hole and fill any gaps with scalpings for stability and support.

4. Add Water

Once your pond structure is in place, fill it with water. To make it more dynamic, consider installing a solar-powered water pump or adding a small fountain. These features can enhance the look and create a soothing soundscape.

5. Decorate and Style

Customize your pond to suit your vision. For a natural look, surround the pond with rockery stones and accent with smaller stones like Green Slate to create depth and texture. Add water plants from a garden center for extra charm and to support local wildlife. These final touches help you achieve the exact aesthetic you desire, whether rustic or polished.

Additional Note:

As our Decorative Stones are naturally sourced, slight variations in color and texture are normal. Occasionally, stones may arrive with a layer of dust—simply hose them down to reveal their true beauty.

By following these steps, you can create a stunning, low-maintenance pond that fits seamlessly into your garden while supporting the surrounding ecosystem!

Buy With Confidence

• Our 40mm Green Slate can be purchased in 20kg maxi bags or bulk bags that weigh approx. 850kg
• Please select the bag size you'd like to buy and add it to your basket 
• Our aggregates will either arrive on a HIAB lorry that can be used to lift the stone onto your garden, or it will arrive on a pallet for kerbside delivery; depending on your address
• You can choose a free collection from one of our Depots or fuss-free, home delivery.

A Service You Can Rely On

• Our reliable service offers prompt delivery to any area in the UK
• Stone Zone is a family-run business that has been well-established since 1998
• Our efficient customer advisors can help you with your purchase
• We pride ourselves on offering a range of affordable garden supplies 

Sample stones are available in-store and online, please ask a customer advisor. 

A Delivery Service Tailored to You

Our top-rated delivery service is flexible and reliable to suit you, however, it can cary depending on where you live. Click here for more information on our delivery service and if your postcode is classed as 'local' or 'national.'

Any questions? Use our live chat to speak to an advisor, alternatively, you can fill out an enquiry form or call us on 01202 874207.