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    Home » Vegetable Garden » How to Start Growing Tomato Seeds Indoors

    How to Start Growing Tomato Seeds Indoors

    Post by The Farm Girl Blog · 8 Comments

    In this post, you will learn How to Start Growing Tomato Seeds Indoors. Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.

     Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.  

    To speed up the process of tomato germination I prefer to soak the seeds before sowing. Read more about it HERE. Soaked seeds in water for 48 hours germinated in 3 days after being planted.

    You will need:

    Organic Tomato Seeds - You may use any organic certified tomato seeds.

    Tomato Starter Container - You can purchase a seed starter on Amazon, but I keep it simple and use any kind of container.

     Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.  

    Simple Steps

    Fill a container with seed starter mix or use organic potting soil mix (I get it at Costco for fraction of the cost). DO NOT use garden soil which often drains poorly and may carry disease. Gently press the soil to remove air pockets.

    Use finger to poke a small hole per seed about a quarter-inch deep. Place one seed in each hole. Then sprinkle additional soil to cover the holes with seeds about a half-inch thick. Once again gently firm the sprinkle soil mix and water it lightly (DO NOT flood the container with water).

    Place a container in a warm full light place (I place on the window sill) about at least 70 F (21 C) to 80 F (27 C).

     Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.  

    Check daily to keep the planting mix moist but not saturated. Once you see the first sprout keep the seedling to high light exposure or set on the window sill that has lots of direct sun.

    Continue keeping the planting seed moist but not soggy.

    Tomato plants 4 days after planting shown on the picture below. They were barely reaching half-inch in length.

     Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.  

    When the seedlings are about 2 to 3 inches tall and have 2 sets of leaves, its time to transplant individual tomato seedlings into bigger pots. Read more about this process in the following post.

    The following picture shows the result of tomato plants germinated and grew about one and a half-inch tall 7 days after being planted.

     Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.  
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    How to Start Growing Tomato Seeds Indoors

    Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.

    Keyword: growing tomato seeds indoor, tomato seed starter
    Author: Valya of The Farm Girl Blog
    Ingredients
    You will need
    • Tomato Seeds
    • Tomato Starter Container/kit
    • Starter Soil Mix
    Instructions
    Simple Steps
    1. Fill a container with seed starter mix or use organic potting soil mix (I get it at Costco for fraction of the cost). DO NOT use garden soil which often drains poorly and may carry disease. Gently press the soil to remove air pockets.

    2. Use finger to poke a small hole per seed about a quarter-inch deep. Place one seed in each hole. Then sprinkle additional soil to cover the holes with seeds about a half inch thick. Once again gently firm the sprinkle soil mix and water it lightly (DO NOT flood the container with water).

    3. Place a container in a wart full light place (I place on the window sill) about at least 70 F (21 C) to 80 F (27 C).

    4. Check daily to keep the planting mix moist but not saturated. Once you see the first sprout keep the seedling to high light exposure or set on the window sill that has lots of direct sun.

    5. Continue keeping the planting seed moist but not soggy.
    6. When the seedlings are about 2 to 3 inches tall and have 2 sets of leaves, its time to transplant individual tomato seedlings into bigger pots. Read more about this process in the next post.

    I order my seeds from Nikitovka Seeds.

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     Tomato plants are one of the easiest vegetables to start growing indoors from seeds. You need to start this process about four to six weeks before the last spring frost date in your region.  | thefarmgirlblog.com

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    Starting Cucumber Seeds Indoors »

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    Comments

    1. Girija Venugopal says

      August 04, 2020 at 8:17 am

      Very informative

      Reply
      • Valya of The Farm Girl Blog says

        August 05, 2020 at 3:40 pm

        Thank you for finding this post helpful!

        Reply
      • Lena says

        February 05, 2022 at 10:29 am

        Valya what kind of soil mix do you use for the tomatoes? Is there a brand you like?

        Reply
        • The Farm Girl Blog says

          February 05, 2022 at 11:32 am

          I usually use an organic potting mix from Costco.

          Reply
        • Lena says

          February 05, 2022 at 11:13 pm

          Thank you!!!

          Reply
    2. Richard says

      December 17, 2020 at 3:06 am

      Hello, I found your article about how to start growing tomato seeds indoors really helpful..thanks, Richard

      Reply
    3. Karen Alter says

      March 30, 2022 at 8:43 am

      5 stars
      Just started my seeds indoors. Now starting to grow, your page was so helpful for what to do next.

      Reply
      • The Farm Girl Blog says

        April 01, 2022 at 10:31 pm

        Thank you for your feedback! 🙂

        Reply

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    My passion is to share my experience growing, weeding and fertilizing flower, fruit, and vegetable garden. Organizations and tips. Also, I will be sharing recipes, and how to harvest homegrown fruits and vegetables. Read More…

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