The best thing to do is let nature take its course. Some companies offer powder-coated
fixtures to combat the effects of weathering, but these types of finishes will inevitably
fail, thus exposing the cast aluminum and even steel components that will eventually
oxidize, rust and fall apart. Many companies offer fixtures with a combination of
copper and brass, but dissimilar metals will result in the phenomenon known as galvanic
corrosion in which more noble metals attack and corrode less noble ones.
Coastal Source solid brass fixtures were designed to weather the elements with little
to no maintenance so you can spend more time enjoying your lights rather than replacing them.