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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesSelective sucker removal may help some indeterminate tomato plants produce ripe fruit sooner, but there is no reliable promise of a harvest weeks earlier. The trade-off can be fewer tomatoes, and the right approach depends on whether your plant is indeterminate or determinate.
What the tomato “trick” is—and what it can do
A sucker is a side shoot that grows in the angle between a tomato stem and a leaf. On indeterminate plants, which keep growing and setting fruit through the season, removing selected suckers can make the plant easier to train and reduce dense growth and shading. University extension guidance describes earlier fruit maturation as a possible benefit of pruning, not a guaranteed result or a fixed number of weeks saved. Wisconsin Extension, University of Vermont Extension, and Oregon State Extension all qualify the benefit rather than promise a specific harvest date.
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Pruning is not the same as removing leaves or picking green fruit early. Leaves supply sugars and shade fruit; too much pruning can expose tomatoes to sunscald and reduce the crop. A 2024 study of very early-picked tomatoes examined postharvest ripening and fruit defects, not whether pruning advances harvest, so it does not establish a pruning benefit. The study was published in Horticulture Research on July 22, 2024.
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Choose a pruning approach for your tomato type
| Plant or training choice | Pruning approach | What to weigh |
|---|---|---|
| Indeterminate | Remove selected suckers to train the plant; inspect regularly for new shoots. | May encourage earlier maturation, but heavy pruning can mean fewer tomatoes. |
| Determinate | Prune lightly; Vermont Extension recommends removing lower leaves that touch the soil. | These plants have a more limited growth habit and generally do not call for the same sucker-removal approach. |
| One-leader training | Keep one main stem by removing competing suckers. | UC IPM says one-leader plants bear earlier but produce less overall. |
| Multiple stems | Retain more than one main stem and remove only selected growth. | Compared with one leader, this avoids the same degree of yield reduction but may make the plant denser and harder to manage. |
The comparison between one and multiple stems is a choice, not a universal prescription. UC IPM’s guidance describes the one-leader trade-off; it does not establish that every variety or garden will respond identically. UC IPM’s tomato cultural tips also caution that severe one-stem pruning can reduce total yield substantially and may increase some diseases or disorders.
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How to remove suckers without stripping the plant
- Check the growth habit. Use sucker-focused training mainly for indeterminate plants. For determinate plants, keep pruning limited rather than treating every side shoot as something to remove.
- Find the sucker. Look in the junction between a leaf and the main stem. A sucker is a shoot emerging from that leaf axil.
- Remove selectively. Pinch off small shoots with your fingers. Scissors or clean, sharp pruning shears can be used for larger shoots or deliberate cuts; tools are optional and do not make fruit ripen sooner.
- Keep protective foliage. Do not remove leaves indiscriminately. Vermont Extension notes that leaves above and below fruit clusters shade the fruit and supply sugars.
- Inspect regularly, but stop near harvest. Oregon State’s short-season guidance recommends checking indeterminate plants every 7 to 10 days and pinching side shoots as they emerge. Wisconsin Extension advises stopping pruning one to two weeks before the expected first harvest so a protective canopy can grow.
Oregon State’s inspection interval is regional short-season guidance, not a rule that every gardener must follow on precisely that schedule. The Wisconsin timing is a recommendation for canopy protection, not an estimate of how much earlier the tomatoes will ripen. See Oregon State’s tomato and tomatillo guide and Wisconsin’s pruning guidance.
Why “weeks earlier” is not a dependable result
The strongest specific example in the available guidance is an Oregon State report on the Early Girl cultivar. It summarizes trials in which severe pruning combined with staking brought earlier ripening on the first three trusses, alongside decreased yield and increased concerns about splitting or cracking. That result is specific to the cultivar and trial conditions; it does not show that ordinary sucker removal advances every home-garden harvest by a set number of weeks. Oregon State’s 1978 report, “Tomato Yield and Quality Affected by Pruning Method,” provides the trial context.
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For your own plants, pruning intensity, variety, plant type, and growing conditions all matter. If your priority is the largest total crop, severe one-leader pruning may be a poor trade. If managing vigorous growth or getting some fruit to mature sooner matters more, selective pruning of an indeterminate plant is a reasonable option—but not a calendar guarantee.
A different late-season option: top plants before frost
If frost is approaching and you want the fruit already on an indeterminate plant to mature, topping is a separate late-season tactic. Vermont and Oregon State guidance describes cutting off new growth about one month before expected first frost so the plant focuses on established fruit. This is not a way to promise an earlier first harvest at the start of the season. See Vermont Extension’s pruning guidance and Oregon State’s guide.
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