In the past I've written evergreen content by accident. The content has been relevant timely and valuable to more than my initial target audience. In that case I didn't post the content anywhere. I published the search engine optimized content with a personal testimony. It was story, that I just held to be true. I published the content to an article directory that was associated content years ago.
To this day, I still get links and e-mails and payment from that same article. In this case I get traffic to it because of social proof. Others found the content relevant and commented on it . The social proof made the content relevant to googles eyes.