Why Trellis and Evergreens Beat a Solid Fence

A six-foot panel fence does the job, but it also casts a long shadow and can make a small garden feel hemmed in. Trellis topped with an evergreen climber is the gentler option. The gaps in the trellis let light and air through, while the foliage on the face of it blocks the sightlines that make you feel overlooked. You get privacy exactly where you need it — usually between four and six feet up — without turning your patio into a cave. It is also far kinder to neighbouring plants that rely on that bit of afternoon sun.

The trick is to think of the trellis as a skeleton and the climber as the muscle. A bare trellis offers almost no privacy; a well-clothed one is as effective as a hedge but takes up a fraction of the width. In a typical UK terrace or semi, a run of trellis along a boundary or fixed to a side wall can solve an overlooked kitchen window or a seating area in a single growing season.

Choosing the Right Trellis for the Job

Not all trellis is equal, and the cheap diamond-lattice panels from the local DIY shed will sag within two years under the weight of mature ivy. Look for panels with thicker slats — around 10mm to 15mm — and a decent pressure-treated or painted finish. Square grid trellis in a 100mm or 150mm spacing is easier to train climbers through than tight diamond patterns, and it looks more contemporary against brick or render.

• Fixed panels: best for walls and fences where you want a permanent screen. Screw them to treated timber battens rather than directly into the wall, leaving a 25–40mm gap behind for air circulation.
• Expandable trellis: useful for awkward widths and rented gardens, as it can be lifted out and taken with you.
• Freestanding trellis: ideal for dividing a patio from a lawn or screening a bin store. Pair it with a sturdy post and a concrete-in base, or a weighted planter foot.
• Metal trellis: slim, rust-proof options suit modern courtyards and won't rot, though they cost more upfront.

Whatever you choose, fix it at least 50mm clear of the ground so the base doesn't sit in wet soil. If you are drilling into a wall, avoid the mortar courses where possible and use stainless screws. On a fence, fix into the rails, not just the feather-edge boards.

The Best Evergreen Climbers for UK Gardens

Evergreen means the screen works all year, which matters most in winter when neighbours' windows are lit and your garden is bare. The classic choice is common ivy (Hedera helix), and for good reason: it is hardy, tolerant of shade, and will cover a trellis faster than almost anything. It does need annual clipping to stop it creeping onto window frames and roof tiles, and it should never be allowed to grow into gutters. Plant it in a root barrier if you are near a wall you care about.

Star jasmine (Trachelospermum jasminoides) is the connoisseur's pick. It has glossy dark leaves that turn bronze in cold snaps, and in July and August it produces creamy-white, heavily scented flowers. It needs a sheltered, sunny spot — a south or west-facing wall in most of the UK — and it is slower to establish than ivy, so buy the largest plant you can afford. In colder areas, grow it in a pot that can be moved under cover for the worst of the winter.

Other reliable evergreens include Clematis armandii, which flowers in early spring and keeps its leaves all year, and evergreen honeysuckle (Lonicera henryi), which is less rampant than its deciduous cousins. For a sunny, exposed spot, pyracantha can be trained flat against trellis and gives you white flowers, red berries and thorny security in one plant.

Planting and Training for a Dense Screen

Autumn is the best time to plant, while the soil is still warm and the rains do the watering for you. Dig a hole twice the width of the rootball and mix in a few handfuls of garden compost or well-rotted manure. Plant the climber about 30–45cm away from the base of the wall or fence, then angle the stems back towards the trellis. This keeps the roots out of the rain shadow — the dry strip right against a wall — and gives the plant a better start.

Water regularly for the first two summers, even for drought-tolerant types. Feed with a balanced granular fertiliser in spring, and mulch with bark chips to lock in moisture. As the stems grow, tie them in with soft twine or vine ties, fanning them out rather than letting them bunch upwards. Pinch out the growing tips of ivy and jasmine to encourage side shoots, which is what fills the gaps and gives you that solid green wall.

• Space plants: one climber every 1.5–2m along a trellis run, or two for a really fast screen.
• Train horizontally first: a stem bent sideways will throw out vertical shoots all along its length.
• Keep the base clear: don't let mulch or leaves pile up against the stems, as this can cause rot.

Maintenance Through the Year

An evergreen screen is low-maintenance, not no-maintenance. Plan on a trim in late spring, after the risk of hard frost has passed, and a second light tidy in late summer if growth is strong. Ivy and jasmine will both tolerate a good haircut with hedge shears, but check for nesting birds first — the Wildlife and Countryside Act protects active nests, so if you see one, wait until the chicks have fledged.

Star jasmine and Clematis armandii flower on the previous year's growth, so if you prune them hard in spring you will lose that season's scent. Instead, thin out overcrowded stems after flowering and tie in the new growth. Keep an eye out for aphids on soft new tips, and for scale insects on ivy in mild winters. A jet of water or a dab of soapy spray usually sorts the former; the latter is best rubbed off by hand.

Finally, check your fixings each autumn. A mature evergreen screen catches a lot of wind, and a loose batten can turn a neat trellis into a sail. A five-minute tighten now saves a repair job in January.