Why Every Cold Climate Gardener Needs a Trellis

There’s a moment every spring when I stand in my small urban garden and feel that familiar tension — the long list of everything I want to grow, and the very finite patch of earth I actually have. Sound familiar? For years I squeezed in what I could, made compromises, and told myself I’d figure out the rest next season.

Then I started looking up.

The answer, it turned out, had been right in front of me all along. A trellis. It sounds almost too simple, doesn’t it? But training plants to grow vertically along a support structure completely changed how I use my space. What felt like a small, limiting garden suddenly had a whole new dimension — literally. I’m still working with the same number of square metres, but I’m harvesting far more food, and my garden feels more alive, more layered, and honestly, more beautiful than ever before.

So why does every cold climate gardener need a trellis? Let me show you.

The Advantages of Trellising

The case for vertical growing is stronger than you might think, and it goes well beyond simply saving space.

It multiplies your growing area

This is the big one. When you grow upward, you’re effectively adding square metres to your garden without touching the ground plan. A cucumber vine climbing a two-metre trellis takes up a fraction of the soil it would need sprawling horizontally, yet produces just as much fruit — often more.

For anyone gardening in a small urban space, this is genuinely transformative. A single well-placed trellis can free up enough ground to add another bed, a path, or a seating area.

Next Read: How to succeed growing cucumbers

Plants stay healthier

When foliage and fruit hang freely in the air rather than resting on damp ground, airflow improves significantly. This matters enormously in our northern climate, where cool, humid summers create ideal conditions for mildew and fungal disease.

Trellised plants dry out faster after rain, and disease has a much harder time taking hold. A trellis is, in this sense, a form of preventative care for your garden.

Harvesting becomes a pleasure

Have you ever spent ten minutes on your hands and knees hunting for pea pods hidden deep inside a sprawling plant? When your crops grow vertically, everything is visible and within reach. You pick more at the right time, which means better flavour, less waste, and continuous production throughout the season.

Pests and disease are easier to manage

Lifting plants off the soil keeps them away from soil-borne pathogens and makes it harder for slugs and snails to reach the tender leaves and fruit. You can also spot problems developing earlier when everything is spread out in front of you rather than tangled on the ground.

It fits beautifully into permaculture principles

A trellis is a natural expression of stacking functions — one simple structure can simultaneously support plants, define a space in the garden, provide dappled shade for lower-growing crops that prefer it, and create habitat for beneficial insects. In permaculture design, we’re always asking how one element can serve multiple purposes, and a well-placed trellis ticks many boxes at once.

Next Read: What is a permaculture garden?

It extends your growing season

In Scandinavia, every week counts. A trellis positioned against a south-facing wall or fence creates a warm microclimate that can add several degrees to the immediate growing area. That small boost can mean the difference between a struggling courgette and a thriving one — and it can push your harvest further into autumn, which in our climate feels like a genuine luxury.

15 Vegetables You Can Trellis in a Cold Climate

One of the things I love most about vertical growing is how many crops benefit from it. Here are fifteen vegetables that work beautifully on a trellis and are well suited to Scandinavian conditions:

Peas — The classic climber. Snow peas, sugar snaps, and shelling peas all love to scramble upward, and they’re among the most cold-hardy crops you can grow. Start them early in spring; they actually thrive in cool weather.
Runner beans — Vigorous, reliable, and very productive. Runner beans shoot upward quickly and reward you with generous harvests all summer long.
Climbing French beans — Slightly more delicate than runner beans but with wonderful flavour. Choose climbing (pole) varieties rather than bush types and let them wind their way up the trellis naturally.
Cucumbers — In our climate, cucumbers love the warmth of a south-facing trellis. Growing them vertically also keeps the fruit straight and easy to spot among the foliage.
Courgettes — Often left to sprawl on the ground, but courgette plants can absolutely be trained upward with a little encouragement. A trellis keeps the sprawl in check, which is particularly helpful in a small urban garden.
Squash (small-fruited varieties) — Varieties like ‘Delicata’ or ‘Honey Bear’ are compact enough to be supported on a trellis. Larger-fruited varieties can be grown vertically too, with the help of simple slings made from old fabric or netting.
Kale — Tall varieties like ‘Nero di Toscana’ grow quite upright naturally and benefit from being tied to a simple trellis or stake, especially in exposed positions where wind can cause them to flop.
Tomatoes (indeterminate varieties) — Any tall, vining tomato needs support. A trellis keeps fruit off the ground, maximises the warmth the plants receive, and makes it easy to see when something is ready to pick.
Nasturtiums — Not strictly a vegetable, but every part is edible and they make excellent companion plants. Climbing nasturtiums will cheerfully scramble up any trellis you give them and bring pollinators with them.
Chard — Taller varieties of chard benefit from light support in exposed positions, and they add wonderful colour to a vertical display alongside other climbers.
Climbing spinach (Malabar spinach) — A heat-tolerant leaf green that takes beautifully to a trellis. It needs a sheltered spot in our climate but performs well through summer and is worth trying.
Scarlet runner beans — These pull double duty: the flowers are brilliant red and attract pollinators all season, and the beans themselves are delicious. A gorgeous addition to any trellis.
Mangetout — Somewhere between a snow pea and a shelling pea, mangetout are productive, sweet, and eaten whole. Extremely hardy and one of my earliest spring sowings — they go up the trellis almost before you’ve finished other preparations.
Ground cherries (Physalis) — An unusual but wonderful crop for northern gardens. The plants can get lanky and benefit from support; the sweet, papery-husked fruits are extraordinary.
Borlotti beans — Beautiful climbing plants with stunning speckled pods, and the dried beans store brilliantly through winter. They love a warm trellis position and reward you well.

Types of Trellises to Try

Over the years I’ve experimented with quite a few different trellis styles, and I’ve come to appreciate that different structures suit different plants and spaces. Here’s a rundown of the main options — and some thoughts from my own experience.

Simple Stakes and String

This is where most of us start, and it remains one of my most-used approaches. Push bamboo canes or wooden stakes into the ground and string natural twine horizontally between them at intervals of about 20–30 cm.

A string trellis like this is inexpensive, quick to set up, and easy to compost at the end of the season if you use jute or hemp twine. It works wonderfully for peas and beans and can be scaled up as large as you need. I try to source bamboo canes second-hand or reuse them year after year — it’s a small thing, but it adds up.

Teepee or Wigwam Structures

Three to five bamboo canes or long branches tied at the top in a cone shape make a classic wigwam trellis. These are ideal for beans and peas and have a lovely structural quality in the garden — they look intentional and beautiful, even when the plants are small.

I’ve made wigwams from coppiced hazel branches, which feels wonderfully in keeping with permaculture values. By midsummer you have a living tower of greenery, and it becomes one of the focal points of the whole garden.

Next Read: When to plant Broad Beans – A Guide to Cultivation

Wire or Mesh Panels

A rigid panel of galvanised wire mesh fixed between posts gives plants a sturdy grid to climb. This type of trellis is particularly good for cucumbers, tomatoes, and squash, which need more substantial support than string alone provides.

I’ve bought wire mesh panels and I’ve also salvaged old metal headboards — any flat grid structure works. More of an upfront investment, but a good wire trellis lasts for many years.

A-Frame Trellises

Two panels hinged or tied at the top to form an A-shape can be set over a bed, with plants growing up both sides. The shaded space underneath stays relatively cool and moist, which is ideal for growing salad crops that bolt in the heat. It’s a beautiful example of stacking functions — one trellis structure, multiple uses.

Upcycled and Found Structures

This is where I have the most fun. Old pallets, salvaged bed frames, branches pruned from garden trees, birch poles, driftwood — all of these can become a trellis with a little creativity.

I love that this approach costs almost nothing, keeps materials out of landfill, and gives the garden a handmade, characterful feel that fits naturally with a sustainable ethos.

Wall-Mounted Systems

If you have a south-facing wall or fence, attaching a trellis directly to it creates one of the warmest growing environments in a northern climate. Wire strung horizontally through vine eyes, or a simple wooden batten framework, gives plants something to grab onto while they soak up the reflected and stored heat of the wall. This is where I grow my most heat-demanding crops — tomatoes and cucumbers have thrived against a warm wall in a way they simply wouldn’t have in an open bed.

A Few Things I’ve Learned Along the Way

Getting your crops onto a trellis is deeply satisfying, and there are a few things that make the whole process smoother. Put your trellis up before you plant — it’s so much easier than threading a structure through established plants later.

Guide your plants gently in the early stages; most climbers will find their own way once they’ve got the idea, but a little encouragement at the start makes a real difference. And always use soft ties — torn fabric strips, old tights, or soft jute twine are far kinder to plant stems than wire or harsh synthetic string.

Most importantly: don’t wait for the perfect setup. Some of my most productive vertical growing has happened by accident — a bean that found its way up a neighbouring structure, a cucumber that decided to claim a wigwam meant for peas. Gardens do their own thing, and that’s half the joy.

So, why does every cold climate gardener need a trellis?

Because our seasons are short, our plots are often small, and we need every advantage we can find. A trellis gives you more growing space, healthier plants, easier harvests, and a garden that feels abundant even when the square metres are limited. It’s one of the simplest, most affordable changes you can make — and in my experience, one of the most rewarding.

Start with a wigwam for your beans this spring. See how it feels. I think you’ll quickly find yourself wondering how you ever gardened without one.