40mm Blue Slate

Our 40mm Blue Slate, a popular choice at Stone Zone, is valued by landscapers and homeowners alike. As part of our Decorative Stones collection, these slate stones feature a stunning deep blue color and a unique flat shape, creating a distinctive, polished look in any garden setting.

The color of this Welsh Blue Slate becomes even richer when wet, adding a beautiful, eye-catching effect to garden beds and water features. Unlike traditional pebbles or chippings, these larger, flatter stones lend a unique texture and visual interest to landscaping projects.

Sourced directly from North Wales, our 40mm Blue Slate stones are versatile and fish-friendly, making them an excellent option for pond areas and water features. Additionally, these stones come in 20mm Blue Slate and 40mm stones, offering options to suit various decorative needs. Whether you’re aiming to enhance a path, pond, or garden design, Blue Slate is a beautiful and practical choice that adds both elegance and durability to outdoor spaces.

40mm Blue Slate Features

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

40mm Blue Slate for Your Garden

If you’re looking to refresh your garden with minimal time and effort, the 40mm Blue Slate is an excellent choice. These garden stones add vibrant color and rich texture, instantly elevating any outdoor area.

At around 40mm in size, Welsh Blue Slate is ideal for decorative purposes rather than pathways or driveways, as it isn’t designed to provide stable ground for walking or driving. Instead, these stones are best suited for garden accents, offering a refined look for both front and back yard spaces.

One particularly striking use for these slate stones is as a garden border. You can customize the width and layout to fit your space and preferences, pairing them beautifully with Turf Grass or plant borders to create a natural, cohesive feel. They also work well as a border along the perimeter of your home, enhancing curb appeal.

For more inspiration on creating garden borders and other ways to use Blue Slate, browse additional resources and let your creativity shape a stylish, easy-to-maintain garden design.

Welsh Slate for a Garden Pond

Garden ponds can enhance the serenity of your outdoor space, and revitalizing one with Blue Slate stones adds a fresh, elegant touch. These deep blue stones bring a chic, modern look to your pond, making it feel brand new without the need for a costly overhaul. Their colors are particularly striking in and around water, giving your garden a sense of depth and visual appeal.

Since Blue Slate stones are lime-free, they’re safe for fish and other wildlife, making them an ideal choice for eco-friendly garden designs. For added dimension, you can layer Blue Slate with other decorative stones, creating a tiered effect that adds texture and style to your pond, impressing visitors with your garden’s refined, tranquil vibe.

How to Buy 40mm, Blue 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.

How to Create a Garden Pond 

Creating a stylish water feature or a charming vintage pond in your garden can be a straightforward and budget-friendly project, even for beginners. Here’s a step-by-step guide to help you build a beautiful pond that will become a focal point in your outdoor space:

1. Select the Location

Choose a spot in your garden where the pond will thrive. Avoid areas directly under trees, as leaves and debris will increase maintenance. Ideally, select a location that gets partial sunlight to help maintain cool water temperatures and reduce algae growth.

2. Determine Size and Shape

Decide on the size, depth, and style of your pond. For a quick and affordable option, consider a preformed plastic pond. Mark the outline of the pond area with spray paint. For a raised pond, use treated sleepers lined with a water-tight material.

3. Excavate and Prepare the Base

For ground-level ponds, dig to the desired depth, removing soil evenly within the marked area. Fill any voids with scalpings or compacted gravel for a stable foundation. Place the preformed pond or waterproof liner securely in the excavation.

4. Add Water and Features

Fill your pond with water and consider adding a solar-powered pump to create gentle water movement. Adding a small fountain can enhance the soothing sounds and visual appeal, transforming it into a dynamic water feature.

5. Design the Surroundings

Surround the pond with a mix of decorative stones and chippings, such as Blue Slate, to add texture and depth to the area. Aquatic plants and small stones around the pond edge can blend it seamlessly into your garden’s natural look.

Tip: Rinse decorative stones before use to reveal their true color, as natural stones can sometimes be dusty when first installed.

Following these steps will help you create a serene, eye-catching pond that serves as both a retreat and a welcoming space for friends and family to gather.

Buy With Confidence

• Our 40mm Blue Slate can be purchased in 20kg maxi bags or bulk bags that weigh approx. 850kg
• Not sure how much you need? Use our quantity calculator and enter your garden width and length to find out how many maxi bags/bulk bags you need! 
• 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.