Article summary
How to use trellis fencing to add height, decoration, and climbing plants to your garden boundary.
- Category:
- design
- Read time:
- 3 min
- Published:
- 20 November 2025
- Written by:
- My Homes Fencing Expert
Quick answer: trellis fencing is the go-to for adding height and greenery without a heavy solid wall — most often used as a topper on an existing fence to gain privacy, or as a standalone lattice screen for climbing plants. It lets light and air through while breaking up sightlines, and once climbers fill in, it turns a plain boundary into a living green screen. It's one of the cheapest ways to add both privacy and character.
Trellis is versatile and budget-friendly, but it needs the right support and plants to work well. Here's how to use it around an Auckland yard.
Trellis Toppers: Extra Height and Privacy
The most popular use of trellis is as a topper — a lattice panel added along the top of an existing fence to lift its height and add screening without building a whole new solid fence. It's a cost-effective way to gain privacy from a neighbour's upstairs window or a raised deck, and the open lattice feels lighter than solid boards, so it doesn't box the yard in.
The key is that the existing fence and posts must be sound enough to carry the extra height and wind load a topper adds. Where they're not, the posts may need reinforcing first — trellis catches more wind than it looks, so the support underneath matters.
Growing a Living Green Screen
Trellis and climbing plants are made for each other. Fast growers like jasmine, clematis, climbing roses or an ornamental grape will clothe a lattice panel in a season or two, creating a soft, green privacy screen that changes with the seasons. This is a great way to soften a hard boundary or hide a plain fence, and it adds far more character than timber alone.
Choose plants to suit the aspect — sunny north- and west-facing runs suit different climbers than a shaded boundary — and remember evergreen climbers keep screening through winter, while deciduous ones open up when they drop their leaves.
Standalone Screens and Getting It to Last
Beyond toppers, freestanding trellis screens are handy for creating a private nook — around a courtyard, a spa or an outdoor dining spot — without fully fencing the area. They divide space and support planting while keeping things feeling open.
For longevity in Auckland's damp, use treated timber (H4 for anything in ground contact) or a low-maintenance option, and make sure the supporting posts are set properly. Vigorous climbers add real weight over time, so a trellis that's built and fixed well will carry the greenery for years rather than sagging under it.
Frequently Asked Questions
Usually yes — a lattice topper is a cost-effective way to add height and screening without rebuilding. The catch is that the existing fence and posts must be sound enough to carry the extra height and wind load, so they may need reinforcing first.
Fast growers like jasmine, clematis, climbing roses and ornamental grape fill a trellis in a season or two. Evergreen climbers keep screening through winter, while deciduous ones open up when they lose their leaves — choose to suit your aspect.
Open lattice breaks up sightlines and adds a sense of separation while letting light and air through, but full privacy comes once climbing plants fill it in. For immediate solid privacy, a close-boarded fence is better, with trellis added on top for height and greenery.
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