10 tips for using metals in the garden
16.06.2023 - 06:28
/ blog.theenduringgardener.com
10 tips for using metals in the garden
Shiny, lustrous, rusty or painted, metals can be used both structurally and decoratively in your garden. Here are some ideas on how to use and care for steel, aluminium, zinc and copper.
1. Metal mix When two different metals touch and there is a liquid like water present, a slight current flows between the metals. Some, such as zinc, aluminium and carbon steel are ‘active’, becoming easily corroded when in contact with ‘noble’, or passive metals like titanium, nickel and copper. This hierarchy, called the Galvanic Series, means you must match any fastening screws and bolts with the main metal, avoiding combinations like aluminium rivets in steel, or water running off copper onto zinc-coated steel. Galvanised steel fastenings can corrode quickly in stainless steel.
2. Rust to trust
Weathering steel, often called cor-ten steel, is a steel alloy which develops a very attractive, rusty patina on its surface, but will not rust away like mild steel. Popular in sculpture and screens, it can also be used structurally, although it is more vulnerable in salt-laden winds or if water can collect in pockets. Rusty water runoff can stain surrounding paving.
3. Think zinc
Zinc has much lower embodied energy that other metals (one quarter that of aluminium and one third of copper or stainless steel) and it can be easily recycled. Popular for centuries in Europe for roofing, it is protected from corrosion by a beautiful soft bluish-grey patina as it ages. Many beautiful French antique garden pieces such as tubs, house numbers and planters are made from zinc.
4. Recycled art
You can use found metal objects to make your own fascinating garden sculptures, screens and quirky pots. Barbed wire rolled