Green Fence - Treatment or Algae?

I found this photo of a green fence on google in a search of "green fence" and thought it valuable enough to post here. The photographer isn't sure if the green is caused by the treatment the wood was given or by algae from a sprinkler.

I'm not sure either, though I'm betting it was a treatment. Either way, it's green enough for me to appreciate the value of the portrait of the fence and post it to encourage more folks to think GREEN when choosing their new fence.

Looking for a new fence? Consider recycled materials, green fencing or some other reusable item for fencing your yard. Don't use new - that's just a bigger foot print you're making in the sands of time.

Bailing wire and corrugated steel are preferable to adding size to your foot print.