How to Thin Your Tomato Plants

How to Thin Your Tomato Plants

Tomatoes can be a bit finicky even for the best of growers. We like to thin our seedlings to give our 'maters a boost in their infancy. While it might feel counterintuitive to tear out the little seedlings, removing excess tomato seedlings will allow each plant sufficient space, sunlight, and nutrients to grow. Here are a few tips and tricks for thinning tomato plants.

A post shared by Seedsheet (@seedsheet) on



1. Tomato plants are ready for thinning when seedlings reach 2-3 weeks of age or approximately 3-4 inches in height.  

2. When choosing which seedlings to pull and which to leave, keep the larger, more-developed seedlings and remove weaker, smaller seedlings.  

3. To thin tomato seedlings, pull gently upwards from the soil or use scissors to sever the seedling close to the soil. 


4. Thin seedlings so that individual plants are 1-2 feet apart, depending on the type of tomato (larger varieties require more space than smaller varieties). If growing a Seedsheet, it's easy! Just thin to one plant per pod.

A post shared by Seedsheet (@seedsheet) on

Comments (4)

The Seedsheet Team_

Hi Susan,

That is a great question. If you are growing fruiting plants inside during the winter, we suggest using a grow light. Fruiting plants especially, need a lot of light to develop and sustain the growth of their fruit. We suggest 10-12 hours of direct sunlight, so that would definitely be tough to achieve during the winter no matter where you live. As for the particular light, we have done a lot of testing and have found the most success with the LED full spectrum grow light that we offer on our website. Let us know if you have any other questions or concerns.

Susan Serr_

Love this! Will b shopping real soon :) . So the tomatoes and other plants will grow inside in winter … Without special light, etc,?? If so, what? Thanks ❣️

Seedsheet Team_

Hi Barbara! Thanks for the question! You will need to prepare your garden soil before planting a Seedsheet on top. First, remove all of the existing grass and vegetation. Second, use a pitchfork to loosen up at least 12" of soil so that water can percolate through it and your plants roots can develop. Third, we recommend adding a quality organic potting mix or compost mix to the surface of your garden to provide additional nutrients! Here’s a blog post with more detail:

Barbara Lazzaro _

Can seed sheets just be rolled out over grass to start veggie garden or do you have to remove the grass first?

Leave a Comment