How to Keep a Garden Harvest Log

Why keep a log at all

Memory flattens a season. You remember the week the zucchini got away from you and the tomatoes that split after rain, but not when the first beans came in, or which tomato was still going in October. A harvest log turns “it felt like a good year” into something you can check: when each crop started and stopped, which beds and varieties earned their space, and what to grow more or less of next spring.

It doesn’t need to be precise to be useful. It needs to be kept, which mostly means making each entry quick.

What to write down

Each time you pick, write one line per crop:

The date. Add the time if you sometimes pick twice in a day.
The crop, and the variety if you grow more than one: Tomato, San Marzano.
The amount, with its unit: 1 lb 6 oz, 4 items, 2 bunches.
How you measured it: by weight, by count, by volume or in bunches.
Where it grew: Raised bed 1, the south bed, the big pot.
A note, only when something is worth remembering: first ripe ones, split after rain, picked everything before the frost.

The garden and the season (usually the year) only need writing once, at the top of the page. Leave out anything you won’t look at again; every extra column makes the next entry slower.

Weigh it, count it or bunch it

Choose the measure that matches how a crop comes off the plant, and keep to it for that crop all season.

Weigh crops you gather by the handful or the basket: tomatoes, beans, peas, potatoes, onions, carrots, apples.
Count crops that come one at a time: cucumbers, peppers, heads of lettuce or cabbage, ears of corn, melons, winter squash.
Bunch herbs, kale, chard, green onions and radishes, the way they’re sold at a market.
Measure berries by the pint if you pick into pint boxes, or weigh them.

Different crops can use different measures: basil in bunches and tomatoes in pounds is fine. What doesn’t work is adding the kinds together. Three pounds and two bunches isn’t five of anything, so total weight with weight, counts with counts and bunches with bunches.

Weighing tells you the most, but only if the numbers are comparable. How to weigh and record your harvest covers scales, taring a basket and keeping weights consistent.

Mixed baskets

A morning’s basket of tomatoes, basil and a cucumber is three lines with the same date and time, one per crop. Measure each crop on its own, so every crop’s season adds up correctly.

Keep the log where the harvest lands

The best log is the one within reach when you come in with the basket: a clipboard and pencil by the door, next to the scale, or your phone. Write it down the same day. A week later, amounts turn into guesses. If you do miss a day, a rough number with a note (“about a pound, not weighed”) is more useful than a gap.

Reading a season back

At the end of the season, or once a month if you like, sit down with the log and look for:

Totals per crop, one measure at a time: the season’s tomatoes in pounds, its basil in bunches.
First and last picks. The days between them are the crop’s picking span. Next year, compare it against when you planted.
Your busiest weeks, so you can plan preserving, or warn the neighbors.
Varieties side by side. Which kept producing, and which your notes say tasted best.
Beds. Which spots did well, and which crops to move.

Then write three short lines for next year: grow more of, grow less of, try instead. Compare like with like across years: the same crop, measured the same way, in roughly the same space.

On paper or on your phone

Paper is hard to beat for a start, and our free harvest log template has these columns ready to print. If you’d rather keep the log on your phone, Rowleaf, the harvest journal we make for iPhone and Android, keeps this same record: tap a crop, enter the amount in its unit, and it adds up each kind separately, marks firsts and records, and fills in a quilt of your picking days. Logging is free, with no account.