Trellises & Arches
Decorative garden frameworks for climbing plants and features
Trellises and arches are garden structures used to support climbing plants, create visual interest, and define spaces. They come in timber, metal, or composite materials, and can be wall-mounted, freestanding, or arch-style for pathways.
Common Damage
1. Timber Rot & Decay
- Especially at ground contact points
- Warping, cracking, or splitting from sun and moisture
2. Loose Joints
- Broken lattice slats
- Fungal growth and insect damage
3. Metal Corrosion
- Rust and corrosion, especially untreated steel
- Paint flaking leading to exposure
4. Wind & Load Damage
- Strong winds loosening posts or toppling arches
- Heavy climbing plants causing sagging or collapse
5. Plant-Related Issues
- Overgrown climbers pulling structures out of shape
- Moisture trapped by dense foliage accelerating rot
Repairs
minor Repairs
- Treat wood with preservative or paint every 1–2 years
- Check fixings, screws, and joints for looseness
- Prune plants to reduce excessive weight
moderate Repairs
- Replace broken slats or lattice sections
- Re-secure loose joints with screws or brackets
- Treat and sand back rust on metal, then repaint
major Repairs
- Re-anchor posts using concrete or metal spikes
- Partial or full timber replacement if rot is extensive
- Complete structure replacement
New Installation
When Replacement Is Needed
- Adding climbing plant support
- Creating garden features or pathways
- Replacing damaged structures
Installation Steps
Choose Type
- Flat wall trellis, freestanding screens, or garden arches
Select Material
- Timber (natural look), metal (durable), or composite (low maintenance)
Prepare Base
- Concrete or metal spike anchoring for posts
Install Structure
- Secure fixing to wall, fence, or ground
Plant Climbers
- Suitable climbing plants trained onto structure
Lifespan
- Treated timber
- 5–15 years
- Metal (steel/aluminium)
- 15–25+ years
- Composite/PVC
- 20+ years
Warning Signs
- Structure leaning or unstable
- Visible rot or rust
- Slats or lattice broken
- Plants pulling structure out of shape
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