Last Modified: January 27, 2024

Trent Gravel

Warm and Earthy Outdoor Aggregates

27 May 2024

Close up of trent gravel

By Ben Parrot - Landscape Gardener & Amateur Geologist


Stone landscaping material and construction aggregate

Geological name(s):

Fluvial deposits

Other Name(s):

Trent pea gravel, Trent valley gravel, Trent pea stone


Welcome to the only encyclopaedia for decorative aggregates and landscaping materials. Trent gravel, also known as Trent pea stone, is a economical aggregate from the Trent Valley, best known for its colours and round, naturally weathered shape. Its natural texture and attractive mix of warm hues, gives it a unique charm and versatility in garden and landscape design. Trent pea can be used to create a rustic, coastal feel, or more contemporary design themes.

This is a comprehensive encyclopaedia listing about Trent gravel, a hardscape and construction aggregate. It details the product's specifications, accompanied by photographs, and outlines its benefits, applications, and incompatibilities as a landscaping material. Additionally, this entry serves as a gateway to a wealth of DIY resources, with a list of comparable alternatives, articles offering design inspiration and fundamental principles, and a collection of straightforward, step-by-step instructions for constructing your own hardscaping features.

Trent Gravel Specifications





fall safety





fish friendly

eco friendly



diy friendly






Brown, red, pink, grey and white


Angular to rounded

Close up of trent pea gravel 10mm

Size Range

6-20mm (0.25-0.8")

Trent gravel 6mm, Trent gravel 10mm, 20mm Trent gravel, Trent river bed gravel 20mm, 20mm Trent valley gravel

Fall Safety

Unsuitable for play surfaces





Fish Friendly


Pea gravel trent 20mm. Jpg









Trent garden path


Decorative aggregates like Trent gravel offer numerous benefits in gardening and landscaping design. As well as adding visually to a garden's aesthetic, they provide excellent drainage allowing moisture to reach plant roots, while reducing maintenance. The natural tones and varied textures of aggregates can complement any garden style, from traditional to contemporary.

Trent gravel, with its attractive mix of warm, natural hues and rounded to sub-angular stones, adds a unique visual interest to landscapes. It's economical and versatile, with the varied sizes and shapes of Trent gravel aiding in soil moisture retention and the prevention of soil erosion.

  • Inhibits weeds
  • Improves drainage
  • Hard-wearing
  • Eco-friendly, sustainable
  • Low-maintenance
  • Moisture retention
  • Versatile all-rounder
  • pH neutral
  • Transform space fast
  • Safe for aquatic life
  • Root protection
  • Easy to lay


Trent gravel is one of those products which is suitable for just about anything, from gravel driveways and garden paths to water features and pond substrate. It can also be used as a topping material for pots, indoor or out, as well as for borders around plantings to define lines and keep weeds at bay. As you can see from the picture below, it's very pleasing on the eye, providing a clean and uniform finish. The round to sub-angular stones help the aggregate interlock, making for a more stable walking or driving surface than round gravels.

In the following section, we list many common Trent gravel uses. Wherever there is a hyperlink beside an item, an article from Outdoor Aggregates about the topic is available.

Brown gret annd pink gravel garden

Inspiration and Informational Articles

DIY-Friendly How-To Guides

Need to work out how many stone chippings your  project needs? Try our free gravel calculator.

Other Applications

Some other excellent applications for Trent gravel include:

  • Base for terrace, patios or outdoor seating areas
  • Sub-base layers, although cheaper options are available
Trent gravel under garden leaves

Unsuitable For

The following list represents the kinds of applications that Trent gravel may not be suitable for:

  1. 1
    Areas with fine plantings: If you have creepers or low-growing plants in your garden gravel can make it harder for these plants to thrive, as it may interfere with their root systems as they try to grow.
  2. 2
    Erosion control: On steep slopes or areas with significant inclines, the loose nature of the gravel can make it prone to movement which can be problematic on slopes. A gravel grid should be in place as a minimum.
  3. 3
    Play surfaces, unless using the 6mm Trent pea gravel, which is a sound choice.

Similar Alternatives to Trent Gravel

The following is a list of decorative aggregates which are alternatives to Trent gravel. They may offer you a more suitable variation on the primary colour, a more economical option, or a close substitute for cases where the base material may be unsuitable for the project you are creating, e.g. limestone is not fish-friendly, where slate is.








buff, white

10-20mm (0.4-0.8")



grey speckled


3-20mm (0.12-0.8")



pale yellow

5-20mm (0.2-0.8")



black, white, grey, red

6-20mm (0.25-0.8")



golden, brown


10-20mm (0.4-0.8")





10-20mm (0.4-0.8")



Under £80







Washing garden stones 2

When used with weed control fabrics to suppress weeds, Trent gravel can significantly reduce the time spent on garden upkeep, with most work limited to raking and the occasional removal of debris. It is recommended to occasionally power wash the product in order to maintain its original colour and prevent the buildup of algae or moss. Natural quarry materials may also have dust which should be washed off with water during installation.

For areas with heavy foot traffic, such as paths or footpaths, replenishing the chippings may be necessary over time to maintain depth and coverage. For more on how to clean gravel, read our article: how to clean garden stones.

Purchasing Tips

Decorative stones under a hedge

When purchasing Trent gravel, consider the size options and quantity necessary for your project. Where available, it is cost-effective to request a sample to assess the stone's colour and quality against your design requirements. Also, consider the different sizes; for instance, Trent gravel 20mm is typically used for driveways, while smaller 10mm Trent gravel and 6mm Trent pea gravel is better suited to paths. Information about using pea gravel for resin bonding is below.

Our gravel calculator will give you a quick and unbiased estimate for your project needs just by taking a few measurements of the space. It is one of the best and easiest ways to order the right amount and helps avoid shortfalls or over-spending. Purchasing a Trent gravel 20mm bulk bag or ordering in loose loads can offer better value than purchasing in smaller quantities. Therefore, calculating accurately can save both time and money. It is also important to consider the delivery aspects, including vehicle access to the site. Additionally, you should check stock availability and factor in VAT and transportation costs if applicable.

Trent Pea Gravel Resin Bonding Coverage Guide

Trent pea gravel generally comes in 25kg sizes, and a 25kg bag will usually cover 1.25㎡ at 12mm thickness. The following information applies on a per bag basis.

  • For foot traffic areas, a thickness of 12mm with a coverage of 1.25m² is typically adequate.
  • For light vehicular traffic, such as motorbikes or cars driving on and off, then it's recommended to use a thickness of 15mm with a coverage of 1m².
  • For normal vehicular traffic, a thickness of 18mm with a coverage of 0.75m² is recommended.

You will also require ~800g UV stable resin and ~ 1g of resin activator per 25kg bag.


What is Trent gravel?

Trent gravel is a natural stone aggregate known for its warm, earthy hues and mixture of rounded and angular stones, typically sourced from the Trent Valley.

How much is a tonne of gravel?

The price of a tonne of gravel varies based on type and location, but Trent gravel is generally considered mid-priced.

Which gravel is best for the garden?

The best gravel for a garden depends on its intended use; Trent gravel is versatile, suitable for driveways, garden paths and as a top dressing for water features.

There are many wonderful types of gravel and aggregates available for your project needs. Check them out!

About the author 

Ben Parrot is a landscape gardener and amateur geologist. He is the founder of Outdoor Aggregates, with the mission to create the first encyclopaedia for decorative aggregates. From natural stone through to decorative bark, these aggregates are critical to garden and landscape design, universally.

The problem: There isn't any place where all the different types of decorative landscaping materials and construction aggregates can be found, nor are the specifications of each type readily available. So, enriched by his extensive experience, and inspired by the timeless elegance and raw beauty of stone and rock, etched by nature's artistry over millennia, Outdoor Aggregates was born.