Kigo
Quick answer: Kigo explained: the season word in haiku, how it anchors a poem in time and shared feeling, with examples, saijiki basics and advice for poets worldwide.
A kigo is a season word: an image or phrase that anchors a haiku to a specific time of year and carries centuries of accumulated association along with it. Cherry blossom does not merely mean spring; it means transience, crowds, brief glory and the ache under celebration, all delivered in one word.
The kigo is haiku's compression technology. Because generations of poets have written the harvest moon, the first frost and the cicada, each term arrives pre-loaded with mood and memory, letting a seventeen-sound poem borrow the weight of a whole tradition. Japanese poets look kigo up in dedicated almanacs called saijiki, which sort thousands of them by season and subject.
How It Works
Traditional practice recognises five seasons, the usual four plus New Year, and within each season the kigo mark finer gradations: early spring differs from late spring, and lingering heat is its own autumn word. A kigo does two jobs at once: it timestamps the poem and tunes its emotional key, so the rest of the haiku can spend its few words elsewhere. An original example where the season word does the heavy lifting:
First frost supplies mortality, mornings, the turn of the year; the poem only has to supply the hedge and the forgotten glove.
Where You Will See It
Nearly every classical haiku carries a kigo: Basho's frog belongs to spring, his crow on the bare branch to autumn evening, Issa's snail to early summer. Japanese saijiki gather the approved terms with definitions and model poems, and being adopted into a major saijiki is how a new word, sunscreen, say, or the winter heater, officially becomes a season word. English-language haiku splits: many poets keep the kigo faithfully, others accept seasonless poems, and the argument stays productive.
How to Use It in Your Own Poems
Build a personal kigo list from your own latitude, because seasons are local: the first ice-cream van, monsoon mould, exam weather, the smell of pencil shavings in September. Test each candidate by asking what feelings it drags in besides the date. Then write haiku where the season word carries the emotion and the remaining lines stay cool and factual. Contest judges reward exactly this economy; Writory's criteria include language and emotion, and a well-chosen kigo scores on both without spending a syllable.
What poets can take from this
- Choose season words from your own region and life, not borrowed postcards.
- Let the kigo carry the mood so your other words can stay plain.
- Learn the finer gradations: early, mid and late versions of every season.
- Avoid doubling seasons; one kigo per haiku keeps the timestamp clean.
- Keep a running seasonal notebook and harvest it monthly for poems.
Try it yourself
Draft your personal saijiki: ten season words from your own city, two per season plus two for the new year. For each, note the feelings it carries, then write one haiku using your strongest entry.
Questions
Does every haiku need a kigo?
In classical Japanese practice, effectively yes. Modern practice varies: many English-language poets treat the kigo as essential to the form's depth, while others accept seasonless haiku, sometimes classifying them separately. Knowing the convention lets you break it deliberately.
What is the difference between a kigo and a saijiki?
A kigo is a single season word, such as harvest moon. A saijiki is the almanac that collects thousands of kigo, organised by season and category, with definitions and example poems.
Can I invent my own kigo?
Yes, and poets constantly do; new realities need new season words. An invented kigo works when readers in your region instantly feel its time of year, so test yours on someone before trusting it in a poem.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
Enter a Writory poetry contest
Enter the September contest and have your own poem read and scored. That first entry makes you a Writorian.