Weathered Steel on high grade structural steel provides an earthy appearance that is very attractive in the landscape. It is a living, self renewing organic finish. The surface rust actually protects the steel beneath, and because of its texture it does not show dust as glossy finishes do. The weathered steel finish will provide a much longer (attractive) fixture life vs applied coatings such as powder coats. Weathered structural steel will also outlast applied finish options near saltwater, but the life span of the fixture will be less.
Cleaning the Finish: Spray with water and scrub lightly, then rinse. Trade secret; If you want to accelerate the weathering process use a mixture of white vinegar with table salt dissolved and sprayed on. Rise off with water when complete.
The Weathered Steel Finish is Not Sealed. Install the fixtures where rust staining will not be an issue. Ground covers and mulches are not affected.