SFGate

A builders' supply business should be able to provide?

Thank you.
But I have difficulty finding any of them having them in stock incl H Depot and Lowes
in Boston area.

I'm not surprised that you would have to special order it....

If you select Galvanized metal for your project , it won't oxidize.

Actually ... new galvanized panels will oxidize and form the hard, uniform matt surface that you see in the photo, if outdoors. When first installed the galvanized metal panels have a shiny new mill finish that reminds me of huge fish scales. How long it takes to develop the oxidized patina depends on climate and exposure to weather.

How did you install this? I have a neighbors white vinyl wall and I'd love to put this over it

You can also get rid of the shiny waxy coating by wiping new galvanised metal down with (from memory) methelated spirits.
(I know this because its nessecary to either do this or buy a special primer if you're painting over the galvanaised metal because the paint wont adhere properly otherwise!)

This plant is a Chondropetalum, a reed plant from South Africa. This is either tectorum and elephantinum. I was browsing Debora's images (I love her designs) and came across your question.

Actually the plant is Thamnochortus insignis- Thrashing Reed is the common name.