Every good gardener knows there are two types of flowering plants: Annuals and perennials. Annuals bloom once and have to be replanted the next growing season. Perennials stick around; they continue to flower year after year.
Most blog posts are annuals. You publish them, they generate views and shares for a while, and then they basically go dormant. Readers might happen across them occasionally. But think of it this way: When was the last time you went through your favorite blog’s archives? Or clicked on a search result that was over a year old?
Rarely, though, you will find that a post has perennial appeal—what some marketers call “evergreen content.” Even though you published it in 2012, it still gets liked and shared. That’s a clear sign the content is still relevant to your audience.