Should you prune tomato plants?

Author: Zachary Romaguera  |  Last update: Monday, October 27, 2025

Pruning tomato plants is an optional technique that some gardeners use to keep plants tidy, manipulate fruit size, and even speed ripening. There is one big catch: You should only prune indeterminate varieties, which produce new leaves and flowers continuously through the growing season.

What parts of tomato plants should be pruned?

You prune a tomato plant by pinching off the suckers that emerge from the crotch of limbs. Imagine that there are two branches coming off your plant. Then a third one emerges between them. That third one needs to be eliminated. You can do this by pinching them, although sometimes that doesn't deliver a clean break.

Is it better to prune or not prune tomatoes?

Pruning tomatoes is not necessary but can benefit your plant by allowing better airflow, protecting tomatoes from disease, and encouraging more energy to go toward fruit production. Pruning indeterminate tomato varieties can be beneficial in keeping plant sizes manageable and protecting tomato plants from breakage.

Should you cut back leaves on tomato plants?

Yes, trimming the bottom leaves will help prevent soil borne diseases from getting on leaves and spreading to your plant. It will also improve air flow reducing your chance of blight.

What tomato plants should not be pruned?

You only need to worry about pruning if you're growing a vining type, aka an indeterminate tomato. Bush tomatoes, or determinate tomatoes, are basically self-pruning because they're meant to only grow to a certain size and then stop.

To Prune or NOT to Prune Tomato Plants?

Which branches to cut off tomato plant?

Remove "suckers" (small shoots growing in the leaf axils between the main stem and branches). Trim off lower leaves that touch the ground to prevent soil-borne diseases.

Should you trim tomato plants if they get too tall?

Pruning tomato plants is an optional technique that some gardeners use to keep plants tidy, manipulate fruit size, and even speed ripening. There is one big catch: You should only prune indeterminate varieties, which produce new leaves and flowers continuously through the growing season.

How many leaves can I cut off my tomato plant?

Don't pick too many leaves from a plant at one time.It scares the plant and it does not like that. Far better is to prune 2 to 3 leaves regularly (like once a week).

How often should I water tomato plants?

Water correctly: Do not overwater. The first week tomato plants are in the ground, they need water every day, but back off watering after the first week, slowly weaning the plants down to 1 to 1.5 inches of water per week.

How to make tomato plants produce more fruit?

If you're wondering how to increase flowering in tomatoes, try increasing how much light they receive. Tomatoes need eight hours of daylight to flower. Sunlight gives your tomato plants the energy to produce fruit, so if your plant doesn't have enough sunlight, you're less likely to see tomatoes fruiting.

Should cherry tomatoes be pruned?

All tomatoes produce suckers above every leaf. Left unpruned, each sucker will grow into a shoot with leaves and fruit. If every sucker remains, all those shoots, leaves and fruit compete with each other for nutri on, light and water. In cherry tomatoes all these shoots become dense and tangled if left unpruned.

Should you top off tomato plants?

Topping also allows the plant to send it its energy into the leaves and ripening fruit below, rather than making new leaves and new fruit late in the season. In terms of maximum fruit production over the season, I don't think it matters whether you choose to top & prune out suckers or pinch out the next blossoms.

What is the best tool to prune tomato plants?

Sharp, scissor-type hand clippers are the best tool for tomato pruning. Determinate tomatoes, in general, require less pruning than indeterminate types. However, all tomatoes can benefit from some maintenance pruning during their production period.

How to prune tomatoes for maximum yield?

Most tomato pruning involves removing suckers -- the shoots that form in the axils where side branches meet the stem. Remove suckers when they're small by pinching them off with your hand or snipping them with pruners. If your goal is to maximize the harvest, prune suckers sparingly.

How do I know if my tomato plant is determinate or indeterminate?

Determinate and Indeterminate
  1. Determinate varieties (including bush varieties) reach a certain plant height and then stop growing. ...
  2. Indeterminate varieties continue to grow and produce tomatoes all along the stems throughout the growing season.

Which parts of tomato plant should I remove?

Do all tomatoes have to be pinched out? The simple answer is no. With large-fruited tomato varieties such as ox-heart and beef tomatoes, however, the side shoots should be removed. Even with medium-sized indeterminate tomatoes, we recommend only leaving a maximum of two to three shoots, including the main shoot.

What does an overwatered tomato plant look like?

Overwatering generally makes the plant look almost like it's rotting, as in drooping and turning soggy brown. My guess is it is having Nitrogen problems. Any type of vegetable fertilizer you buy at the store should work fine.

What fertilizer is good for tomatoes?

Some growers prefer to use a high-phosphorus fertilizer, indicated by a larger middle number. You can also keep things simple with a fertilizer especially formulated for tomatoes – usually with a ratio like 3-4-6 or 4-7-10. Most importantly, don't over-fertilize. Too little fertilizer is always better than too much.

Why are the leaves on my tomato plant turning yellow?

Yellow leaves and brown spots on tomato plants are most commonly caused by early tomato blight. Once found, early blight can be managed by regularly removing affected foliage from your garden.

What branches do you cut off tomato plants?

Remove suckers or the little stems and leaves that sprout between the main stem and branches of indeterminate tomato plants. Also remove lower leaves that are touching the ground.

Is it OK to cut the lower leaves off tomato plants?

The advantage in removing the lower leaves is that the plants energies go into producing fruit rather than a lot of foliage. Also the lower leaves tend to get powdery mildew so it is good to remove them to stop disease spreading.

What to do when tomato plants get too tall?

This means pinching out the growing tips at the top of the plant and stop the plant growing up any further. Stop off at the top of the plant when there are 3-4 (outside grown) and 4-5 (greenhouse grown) trusses, which are layers of flowers.

Should you prune cucumber plants?

If you only grow one cucumber plant, pruning probably isn't necessary. However, reducing the number of vines on multiple plants improves the vigor of each plant. Fewer vines mean better air circulation and that translates to less opportunity for fungal diseases like powdery mildew and bacterial wilt.

Which leaves to remove from tomato plants?

To grow the strongest tomato plant possible, prune side stems below the first fruit cluster. As a tomato plant matures, its lower leaves begin to yellow. Pinch or prune yellowed leaves to prevent disease, improve the tomato plant's appearance, and help the plant keep its energy focused on fruit production.

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