Harvest Yield Estimator
“How much will I actually get?” is the question that decides whether you’re planning for a few fresh salads or a winter’s worth of canned sauce. Plant six tomatoes without a sense of their output and you may find yourself, come August, leaving bags of fruit on the neighbours’ porch in the dark.
A realistic yield estimate turns guesswork into a plan. It tells you whether to grow more, whether you’ll have a surplus worth preserving, and how much freezer or pantry space to clear. This tool gives you a grounded middle-of-the-road figure based on typical pounds per plant, scaled for how favourable your conditions are.
Harvest Yield Estimator
Estimate total harvest weight from your plant count.
| Crop | Yield per plant | Days to maturity |
|---|---|---|
| Tomato (indeterminate) | 10 lb (4.54 kg) | 75 days |
| Tomato (bush/determinate) | 8 lb (3.63 kg) | 70 days |
| Pepper | 3 lb (1.36 kg) | 70 days |
| Lettuce (leaf) | 0.5 lb (0.23 kg) | 50 days |
| Spinach | 0.3 lb (0.14 kg) | 45 days |
| Kale | 1.5 lb (0.68 kg) | 60 days |
| Broccoli | 1 lb (0.45 kg) | 65 days |
| Cabbage | 2 lb (0.91 kg) | 70 days |
| Carrot | 0.25 lb (0.11 kg) | 70 days |
| Beet | 0.4 lb (0.18 kg) | 55 days |
| Radish | 0.05 lb (0.02 kg) | 28 days |
| Onion | 0.4 lb (0.18 kg) | 100 days |
| Bush bean | 0.5 lb (0.23 kg) | 55 days |
| Pole bean | 1.5 lb (0.68 kg) | 65 days |
| Pea | 0.4 lb (0.18 kg) | 60 days |
| Cucumber (trellised) | 5 lb (2.27 kg) | 55 days |
| Zucchini / summer squash | 8 lb (3.63 kg) | 50 days |
| Pumpkin | 10 lb (4.54 kg) | 100 days |
| Sweet corn | 0.5 lb (0.23 kg) | 75 days |
| Potato | 2 lb (0.91 kg) | 90 days |
| Basil | 0.3 lb (0.14 kg) | 60 days |
| Strawberry | 1 lb (0.45 kg) | 110 days |
Yields vary widely with variety, soil, weather and care. Treat these as a realistic middle-of-the-road planning figure, not a guarantee.
How the yield estimate is calculated
The core is simple: a typical yield per plant for the crop, multiplied by your number of plants. A healthy indeterminate tomato in a home garden returns around ten pounds over a season; a single zucchini plant can bury you in eight pounds and keep going. The calculator holds a sensible per-plant figure for each crop and does the multiplication.
A second dial accounts for reality. The same variety yields very differently in rich, evenly watered soil under a long warm season than it does in poor ground, a cold summer, or a bed that dried out at flowering. The growing conditions setting nudges the estimate up for excellent conditions and down for challenging ones, so the number reflects your situation rather than a trial plot. Alongside the total, the tool shows the crop’s days to maturity, which marks roughly when picking begins and how long the harvest window runs.
Worked example: six tomato plants
Run the default — six indeterminate tomatoes under average conditions. At about ten pounds per plant, that’s roughly 60 pounds of tomatoes across the season, or near 27 kilograms, arriving over many weeks rather than all at once. Days to maturity sits around 75, so from transplanting you’re looking at a couple of months before the first ripe fruit, then a long steady run of picking.
Set the conditions to excellent — deep soil, steady moisture, a warm summer — and the estimate rises by about a third. Set it to challenging and it falls accordingly. Sixty pounds from six plants is plenty for fresh eating with a real surplus for sauce, which is exactly the kind of planning the number is there to inform.
Tips for hitting (or beating) the estimate
- Know your tomato type. Determinate varieties set most of their fruit in one concentrated flush — ideal for a canning weekend — while indeterminate types keep producing until frost. The growth habit changes how the yield arrives, not just how much.
- Feed and water consistently. Uneven watering at fruit set causes blossom-end rot and drops, and hungry plants simply make less. Steady care is what moves you toward the excellent column.
- Harvest often to keep plants producing. Beans, cucumbers, zucchini and the like slow right down if fruit is left to mature on the plant. Frequent picking signals the plant to keep setting more.
- Treat the figure as a planning midpoint. Weather, pests and variety create a wide spread around any average. Use the estimate to decide how much to plant and preserve, not as a guarantee.
- Stagger plantings for a longer harvest. Succession sowing spreads the yield across more weeks, which is easier to use up than one overwhelming glut.
Frequently asked questions
How much does one tomato plant produce? A healthy indeterminate tomato typically yields around ten pounds of fruit over a season in a home garden, though vigorous plants in excellent conditions can do more. Determinate types yield somewhat less and deliver it in a tighter window. Variety, feeding and weather all move the figure.
What reduces garden yields the most? Inconsistent watering, poor or unfed soil, overcrowding, and a short or cold growing season are the usual culprits. Pests and disease take their share too. Most of these are within your control, which is why the conditions setting can shift the estimate so much.
When will I start harvesting? The days-to-maturity figure is your guide — counted from transplanting for started crops, or from sowing for direct-sown ones. It marks the first picking; many crops then produce for weeks beyond that, especially if you harvest regularly.
Why is my real harvest different from the estimate? Yields vary widely with variety, soil, weather and care, so any average is a midpoint with a broad range around it. A cool summer, a pest outbreak, or a particularly productive cultivar can pull your result well above or below the figure shown.