Evergreen content should be timeless. That's why it’s important to make sure that your content doesn't become outdated. Even timeless articles can benefit from changes that improve the content. To keep an article up-to-date, you can occasionally add a new photo or a tip that you or a reader came up with after the article was originally published. Wikipedia is a good example of how articles about historical events or long-deceased people are regularly expanded and updated.
Lists and collections also make good evergreen content, even if the contents of the lists change. For example, a list of the world's tallest buildings can be expanded to include a new building at any time. Even lists that might seem like they're made for eternity aren't written in stone. On the whole, however, these lists will remain evergreen content. People still search for the overall topic, not for individual current facts. Links from other sites can also remain unchanged.
When evergreen content is moderately updated with high-quality copy on a regular basis, it shows professionalism on the part of the authors and strengthens visitors’ overall trust in the website. This, in turn, lowers bounce rates. Readers will keep clicking within the website and continue to view other contents. Well-written evergreen content is, therefore, a perfect way to attract new visitors, as long as it can be easily found via a search engine.
When it comes to SEO (search engine optimization), updates are equally important. That's because Google takes into account the date and frequency of updates, not just the content of a site. Many websites achieve regular updates when comments from users appear. These comments must be managed by content editors. It's best to update the content yourself by adding new material relevant to the topic.