How do I keep a garden record that is actually useful next year?
The handful of things worth writing down — frost dates, first and last events, what failed and when — and the recording habit that survives past February.
- Difficulty
- beginner
- Time
- 15 min
- Read
- 3 min
Short answer
Record five things and nothing else: the date of the last spring frost and the first autumn frost you actually got, the date each thing you sowed germinated and was harvested, anything that failed with a one-line reason, the dates of extreme weather, and one photograph a month from a fixed spot. Three or four years of that gives you your own frost dates, your own sowing calendar and a record of what your garden is actually like — none of which any published source can supply.
Elaborate garden diaries get abandoned in March. The record that survives is short, kept somewhere you already look, and limited to the few things you genuinely cannot remember a year later. Almost everything a gardener wants to know about their own plot is a question about last year that nobody wrote down.
Step by step
- Pick a medium you already use daily.A note on your phone, a shared calendar, a spreadsheet, or a notebook kept with the tools. The best system is the one that is in your hand when the thing happens, because a record you have to go indoors and find will not be kept.
- Record the two frost dates every year.The last spring frost and the first autumn frost you actually experienced. This is the highest-value line in the whole record, because after three or four years you have a site-specific figure better than any published average.
- Record sowing, germination and first harvest for anything you grow to eat.Three dates and a variety name. This is what tells you next year whether to sow earlier, later, or in succession, and it is the fastest way to find out that a variety you liked was actually a fortnight late.
- Write down failures with one line of cause.'Courgettes rotted off at the base — planted too deep', 'second sowing of peas got mildew in the dry spell'. A failure without a reason teaches you nothing; a reason turns it into next year's plan.
- Note the extremes, not the ordinary weather.The date of the heaviest rain, the longest dry spell, a damaging wind, a heatwave, a hard frost. You do not need daily weather — you need the events that explain what the garden did.
- Take one photograph a month from a fixed spot.Mark the spot. A year of twelve comparable photographs is a better record of how the garden changed than a page of writing, and it also captures things you were not looking for at the time.
- Read it back in January.The record is only worth keeping if it is consulted. Half an hour with last year's notes before you order seed is where all the value is actually collected.
Tips
- Photograph seed packets and plant labels rather than transcribing them. The variety name is the detail you will most want and least reliably remember.
- A shared calendar entry with a reminder set for a year ahead is an underrated device: 'sow the parsnips now' will find you at the right moment next year without any diary discipline.
- Record what you did not get round to as well as what you did. A job that has slipped three years running is a job to drop or to change.
- If you plant something borderline-hardy, note where it went and what protection it got. When it survives or fails you then know why.
Common mistakes
- Starting an elaborate diary in January — It will not survive the growing season, which is exactly when the useful information happens. A short record kept all year beats a detailed one kept for six weeks.
- Recording only successes — Failures carry more information. The plant that died in the same spot for a third time is telling you something specific about that spot, and only a record makes the pattern visible.