Evergreen content

Long definition

Evergreen is a content classification by demand curve, not by topic. A topic is evergreen if its search-volume trend over 3-5 years in Google Trends is roughly flat — no decay, no seasonality, no spike. The content built on that topic compounds: a piece published in 2020 still pulls traffic in 2026, and the equity it accrues (backlinks, internal links, age) raises the rest of the site.

Three demand curves to distinguish:

1. Evergreen. "How to invoice as a freelancer in Spain." Volume holds steady year after year. The content has a 5-10 year amortization window if maintained.
2. Seasonal. "Halloween costume ideas." Demand spikes every October, near zero the rest of the year. Plays a role in calendars, not in core authority building.
3. Trending. "GPT-5 release date." Demand peaks for weeks, then collapses. Useful for momentum and links but not the foundation.

A healthy content portfolio for an authority-building site is roughly 70-80% evergreen, 15-25% trending, with a sliver of seasonal where the vertical demands it. The evergreen base is what carries the site through Google updates and through periods when no team member is publishing.

Evergreen does not mean "set and forget". The opposite — evergreen requires refreshing. A 2020 post on "how to set up GA4" needs the 2024 schema migration and the 2026 attribution-model change, or it stops matching reality and decays. Evergreen is "the demand is stable", not "the answer is stable".

The selection process: pull the keyword candidates from Ahrefs / Semrush / GSC; check Google Trends for 5-year stability; reject anything with a clear decay or single spike. Pair with a content brief that locks the angle, then commit to refreshing on a 12-18 month cycle.

The compounding effect is large. A study by Animalz on 250+ B2B blogs found evergreen articles produced 7x the cumulative traffic of news-format articles over a 24-month window. The math compounds because the article still ranks in month 23.

Common misconceptions

• "Evergreen means no maintenance." Wrong. The topic stays relevant; the answer ages. Refresh evergreen pages on a 12-18 month cycle or watch them decay.
• "All how-to content is evergreen." Only how-to with stable demand. "How to use ChatGPT" was a seasonal-trending hybrid in 2023. Check Trends before assuming.
• "Evergreen and pillar are the same thing." Pillar describes a content architecture role (hub linking to clusters). Evergreen describes a demand profile. A pillar is usually evergreen, but not every evergreen post is a pillar.
• "Evergreen content can't have dates." Dates are fine when they signal recency of refresh, not date of relevance. A post from 2020 with a "Updated April 2026" stamp ranks better than the same post hiding its age.