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Outdoors

A Beginner’s Guide: Create a Lush Living Wall in Your Garden

A wall of flowing foliage is a visual joy, a noise muffler and a wildlife haven – and it’s relatively easy to install

Sarah Alcroft
Sarah Alcroft17 December 2021
Houzz UK Editorial Team
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Whether you’re short on space for beds, are keen to disguise an ugly wall or fence, or just want to immerse yourself in greenery, a living wall, also known as a green wall or vertical garden, can be a great addition to any size of garden.

Having a boundary filled with greenery not only looks lovely, it can reduce noise pollution and create a habitat for wildlife. And a surprising range of plants will be quite happy up high, from pretty foliage to flowers, fruit and veg.

Read on for advice from three garden designers on what to grow and how.

Professional advice from: Tom Howard of Tom Howard Garden Design; Simon Orchard of Simon Orchard Garden Design; Maïtanne Hunt of Maïtanne Hunt Garden & Landscape Design
Tom Howard Garden Design and Landscaping
What is a living wall system and can it be fixed to a standard fence?
The framework for your green wall will be a structure containing pockets or troughs into which compost can be added. These are typically made of metal or plastic, and will need to be fixed safely to a wall or sturdy fence, so professional installation is recommended.

“Some of the living wall systems are virtually freestanding, so one would only need fixing to a fence post or wall to stop it toppling over in the wind,” Simon Orchard says.

But Tom Howard cautions, “It’s recommended to use a wall, as living walls can become very heavy (plants, compost/growing medium and water!). If using a fence, make sure it’s very sturdy.”
Maïtanne Hunt Garden & Landscape Design
What kind of plants should I choose?
A surprising number of plants will survive in an elevated pocket given the right care. The most important consideration, according to our experts, is to choose plants happy in that position, whether it’s sunny or shady. “Getting this right is very important, as it is when growing anywhere,” Simon says.

You don’t necessarily need to restrict yourself to small plants, either. “Larger-leaved shrubs, can create a really striking effect,” Simon says, “and the fact that their roots will be restricted will keep them from growing too big.”

“I prefer to use mainly evergreens, as it means the wall will look pretty good all year round,” Tom says. “I always choose a mixture of ferns with different textures. Grasses also work well.”

Maïtanne Hunt agrees you can use a wide range of plants, “as long as you take into consideration their size in a few years’ time (roots included). The plant pockets usually allow for a 1 litre or 2 litre size max,” she says.
Simon Orchard Garden Design
How should I arrange the plants?
Whether you use colour or texture to create a pleasing design, it’s worth planning it out first. If you’re keen on a decorative pattern, start by creating a grid on paper, with each square denoting a planting pocket, as in this scheme by Simon.

“Designing the planting plan is important,” he says. “Consider colour, form and growth rate. Some plants will grow upwards, while some will trail, so bear this in mind.

“Think about creating a pleasing shape with the plants,” he continues. “Just randomising them might look a bit messy, whereas grouping plants together will have more impact and show off the different species.”
Simon Orchard Garden Design
This is the real-life version of Simon’s plan, seen above.

“Along the bottom row you might want some trailing ivy to hide a base fascia board if there is one, or where the wall is raised off the ground,” he says. “Conversely, on the top row you might want something with an upright form.

“Planting in drifts can be very effective and give quite a fluid effect,” he adds. “Choosing contrasting colours or leaf shape/size is also a great way to create a defined pattern.”
Tom Howard Garden Design and Landscaping
Tom likes his designs to be all about texture and different greens, as in this example of his work. “I want a living wall to look lush!” he says. “As ferns prefer shade, it’s best to grow the plants on a wall that isn’t in direct sunlight (part shade is fine), unless you’re going for a herb or flowering wall, which would prefer more sun.”
Sarah Alcroft
What about irrigation?
Planting pockets can dry up quite quickly, so irrigation is key – and drip line irrigation running off a tap timer will save you a lot of work. “Unless you want to be out there daily with a hosepipe, automatic irrigation is a must, and most systems have this included,” Simon says.

With so much water, it’s also important to think about drainage. “The water will drip through the living wall, so it’s essential to have free-draining ground underneath or a channel drain,” Tom says. “We also use a damp-proof membrane [behind the plants], which is stuck to the wall before installing the panels.”

“To avoid run-off, we install a small gutter under the living wall, which is concealed behind trailing plants,” Maïtanne says.
IMBY3 Architecture & Design
And feeding?
Even large planting troughs don’t hold that much soil, meaning nutrients will get depleted, so fertilising is essential to help keep the plants healthy. “Some irrigation systems allow for slow-release fertiliser as part of the system,” Tom says, “otherwise you can add fertiliser manually (with a watering can).”

“Certain plants will end up happier than others and they will have different growth rates, so don’t be afraid to get the secateurs out to keep the thugs in check,” Simon adds.
Scotscape Landscaping Ltd
What are the common mistakes people make in relation to living walls?
“[The biggest mistake is] thinking they look after themselves,” Tom says. “They require a good cut-back once a year. Overhanging plants need to be trimmed back or they’ll smother the plants below them. And be prepared to have to replace some plants from time to time; they don’t always succeed (as with any garden).”

“As with any planting, ‘The right plant for the right place’ is the most important tip and it’s a mistake to ignore this,” Maïtanne says. Choose your plants carefully and they’ll return your care in a plentiful manner.”
Charles C Hugo Landscape Design
What if I only have a small area?
Green walls don’t have to be grand – small can be very beautiful indeed, as these panels prove.

The important thing is to give it a try. “Just have a go and learn as you go along,” Simon says. “Plan ahead and do as much research on the plants and your own conditions [as you can] to choose the best plants for the job. But at the end of the day, there will always be surprises you weren’t expecting and some plants will romp away while others may sulk.”

Read more:
10 Reasons to Say Yes to a Vertical Garden
Tell us:
Are you tempted to have a green wall installed? Or do you have one already? Share your thoughts and photos in the Comments.
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