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Evergreen notes: a complete guide

What are evergreen notes?

Evergreen notes is a concept developed by Andy Matuschak, a researcher focused on tools for thinking and memory. The term describes notes that are written and organised to evolve, contribute, and accumulate over time, across projects.

Most notes are transient. You write them for a specific purpose (a meeting, a class, a project), they serve that purpose, and then they become stale or are abandoned. A transient note on a book you read last year probably sits in a folder somewhere, unrevisited, disconnected from anything else you've thought since.

Evergreen notes are the opposite. They're written with the intention that they'll be refined, linked to, and improved over time as you learn more. The note on a particular concept gets updated when you encounter the concept again in a different book, when you have a new thought that changes your understanding, when you find a connection to something else entirely. Over years, a well-maintained evergreen note becomes a distilled representation of your best thinking on a concept, drawing from everything you've encountered that relates to it.

Matuschak is clear about the deeper purpose: "Better note-taking misses the point; what matters is better thinking." The notes are a tool for developing insight, not a tool for information storage.

The four core principles

Matuschak defines evergreen notes through four properties. Together these distinguish them from ordinary notes.

1. Atomic

Each note should address exactly one concept. Not a book, not a topic, not a project. One concept.

The reason is structural. If a note contains multiple ideas, it can only be linked to as a whole. A note that captures a single concept can be linked to from any note that touches that concept, regardless of context. The more atomic the notes, the denser the connections that become possible.

Matuschak draws an analogy to software engineering's separation of concerns: modules should be "about" one thing so they're more easily reusable. If you fragment notes too much they lose coherence; if you make them too broad you can't find the specific idea when you need it. The right granularity is "one concept clearly expressed."

2. Concept-oriented

Notes should be organised around concepts rather than sources. Not "Notes on Thinking Fast and Slow" but "Dual process theory" or "Cognitive ease." Not "Project X research" but "Attention residue" or "Status quo bias."

This is the principle that enables accumulation. When you read another book that discusses the same concept, you update the existing note rather than creating a new one. Your thinking on that concept compounds. When you start from sources ("notes on this book"), you end up with many separate notes that overlap without ever combining. Matuschak calls this the problem of no accumulation: "your new thoughts on the concept don't combine with the old ones to form a stronger whole; you just have a scattered set of notes on the concept, perhaps referring to it by different names, each embedded in some larger document."

3. Densely linked

Every evergreen note should link to related notes. Not as an afterthought but as a core practice. When you write or update a note, you look for connections to existing notes and add explicit links, ideally with a brief explanation of the relationship.

Over time, clusters of densely linked notes form around the concepts you think about most. These clusters reveal the shape of your understanding, show where your thinking is developed and where it has gaps, and produce unexpected connections between ideas from different domains. The density of links is what transforms a collection of notes into something that can surprise you.

4. Written in your own words

Evergreen notes are your thinking, not captured text from sources. Quoting someone else's formulation of an idea preserves the idea in someone else's words. Writing the idea in your own words means you've understood it well enough to express it differently, and the note carries the fingerprint of your own perspective.

This also makes notes more connectable. Your formulation of a concept will use your language, your framing, your context. When you encounter the concept again, the connection to your existing note is more obvious than it would be if the note were someone else's phrasing.

How evergreen notes work in practice

Start with a title that's a claim or concept

Matuschak titles his notes like propositions: "Spaced repetition may be a useful tool to support evidence-based medicine" or "Evergreen notes should be densely linked." A title that's a claim or concept is more precise than a title that's a topic ("Memory" or "Note-taking"), and it makes the note easier to link to because you know exactly what it asserts.

A vague title usually signals a note that's trying to do too much. Sharpening the title often clarifies the note itself.

Write to your future self

The note should be understandable to you in two years without needing to re-read the source. This means enough context that the note stands alone, written in complete sentences rather than fragments. A note that requires you to remember the context in which you wrote it to understand it hasn't transferred the idea out of your head; it's just reminded you of a question.

Update rather than create

When you encounter a concept you've written about before, don't start a new note. Find the existing note, add the new perspective, update the formulation, add a link to the new source. The note should grow richer and more nuanced over time.

This goes against most people's note-taking instincts, which lean toward starting fresh rather than revising. The revision habit is what creates accumulation.

Link deliberately

After writing or updating a note, spend a few minutes searching for related notes to link to. Write one sentence explaining each connection. This sentence is the thinking work: it forces you to articulate why two ideas relate, which is where insight actually emerges.

Search for notes by semantic meaning rather than exact keywords. You might have written about attention residue under a different framing. Semantic search helps here: describing what you're looking for finds relevant notes even when the wording doesn't match exactly.

Evergreen notes vs Zettelkasten

The concepts are closely related, and Matuschak acknowledges that evergreen notes are "enormously indebted" to the Zettelkasten tradition. The principles overlap substantially: both emphasise atomic notes, concept orientation, explicit links, and notes written in your own words.

The differences are more of emphasis than of kind. Zettelkasten as described by Sönke Ahrens in How to Take Smart Notes has a more structured three-type system (fleeting, literature, permanent), with a specific processing workflow. Evergreen notes is a less prescribed set of principles with more room for individual interpretation.

Matuschak also places more explicit emphasis on revision: evergreen notes are expected to evolve across projects and years, getting better rather than accumulating unchanged. The permanent notes in Zettelkasten are also intended to be refined, but the evergreen framing makes the evolving quality more central.

In practice, many people use the terms interchangeably or build hybrid systems that draw from both. The underlying ideas are compatible enough that distinguishing them sharply is probably less useful than understanding the shared principles.

What evergreen notes are good for

The practice compounds over time. A collection of 50 evergreen notes doesn't behave very differently from a good folder of notes. At 200, clusters start to form. At 500+, the connections between domains become surprising and generative. The people who benefit most from evergreen notes are those who:

Work across multiple disciplines or projects and want their thinking to carry forward.

Write, research, or develop original ideas and want a body of prior thinking to draw from.

Read extensively and want to retain insights across many books rather than forgetting each one after finishing the next.

Return to similar problems over years and want their understanding to compound rather than restart.

The practice is less useful for purely operational knowledge work, project management, or tasks where the goal is completion rather than understanding. For those, GTD, PARA, or a good task management system serves better.

Building the habit

The main challenge isn't understanding the principles. It's building the consistent practice of writing notes that meet them.

Most people find it easier to start with a small number of evergreen notes on topics you're actively thinking about and build from there, rather than trying to convert an existing note collection or systematise everything at once. The first ten or twenty evergreen notes will feel slow. The practice becomes more natural and rewarding as the connections start to appear.

In Fabric, notes can be written with links to other notes and to source materials, with annotations on PDFs connected to the relevant evergreen notes. The AI assistant can surface related notes when you're writing, reducing the friction of finding connections.

Frequently asked questions

How long should an evergreen note be?

Long enough to fully express the concept, short enough to stay focused on one thing. Matuschak's own notes vary from a few sentences to a few paragraphs. If you find yourself writing more than a few hundred words, the note is probably trying to cover more than one concept.

What's the difference between an evergreen note and a permanent note in Zettelkasten?

The terms are nearly interchangeable. Both describe atomic, concept-oriented notes written in your own words and linked to related notes. "Permanent" in Sönke Ahrens's description refers to the note having been permanently included in the slip box system, distinguishing it from fleeting and literature notes. "Evergreen" emphasises the note's ongoing evolution over time. In practice, the differences are minor and the principles are compatible.

Do I need to convert all my existing notes to evergreen notes?

No, and trying to is a good way to spend a lot of time without producing much. Start writing new evergreen notes from your current reading and thinking. If an existing note seems worth developing, convert it. Leave the rest as reference material or archive it.

How do I know when to update an existing note vs create a new one?

Update when you've encountered the same concept and have something to add to your existing understanding. Create a new note when you've encountered a clearly distinct concept that deserves its own entry. If you're not sure, try adding to the existing note and see if it becomes unwieldy. If it does, that's a signal the note is covering two concepts and should be split.

Can I use evergreen notes without using Zettelkasten?

Yes. The principles of evergreen notes are independently applicable regardless of whether you adopt the full Zettelkasten workflow (fleeting notes, literature notes, permanent notes with specific IDs). Many people use evergreen note principles within PARA, within Building a Second Brain, or without any broader system. What matters is the note quality, not the system it lives in.

How do I maintain the notes over time without it becoming a burden?

The maintenance happens at the moment of use: when you encounter a concept again, you find the existing note and update it rather than creating a new one. There's no separate maintenance schedule. The notes improve as a byproduct of your ongoing reading and thinking rather than through dedicated tidying sessions.