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Connecticut Garden Journal
Connecticut Garden Journal is a weekly program hosted by horticulturalist Charlie Nardozzi. Each week, Charlie focuses on a topic relevant to both new and experienced gardeners, including pruning lilac bushes, growing blight-free tomatoes, groundcovers, sunflowers, bulbs, pests, and more.

Connecticut Garden Journal: Starting Tomato Seeds

Tomato seedlings
JP Goguen (Flickr) / Creative Commons
Tomato seedlings

Tomatoes are the most popular home garden vegetable for good reason. They're easy to grow and there are tons of varieties. Tomato varieties range from tiny plants like 'Micro Tom' to monsters like 'Giant Belgium'. But if you want to experiment with growing novel tomato varieties you're probably going to have to grow them from seed. So here's a refresher on growing tomato seeds indoors.

Start with fresh seed and sow them about 4 to 6 weeks before your last frost date. That would be around the end of March or early April in most Connecticut gardens. Sow 2 seeds in a 2-inch diameter pot filled with seed starting potting soil. Seed starting mix is lighter than regular potting soil and easier for the seeds to germinate in. Use a heating pad under the pots to enhance the germination. Once germinated, place the seedlings under grow lights turned on 16 hours a day. Fluorescent T-5 or T-8 grow lights are best for energy efficiency, cost, and longevity. Keep the lights 4 inches from the top of the seedlings as they grow. 

Once the true leaves form, snip out the smaller of the two seedlings. To keep the seedlings stocky, brush them with your hand a few times a day. The movement creates a thicker, shorter stalk. When the seedlings' height is 3 times the diameter of the pot, transplant into a 4-inch diameter pot filled with organic potting soil. Continue growing the seedlings raising the lights to 6 inches above the plant tops. One week before transplanting outdoors, harden off the seedlings exposing them to outdoor conditions gradually each day.

Charlie Nardozzi is a regional Emmy® Award winning garden writer, speaker, radio, and television personality. He has worked for more than 30 years bringing expert information to home gardeners.

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SOMOS CONNECTICUT is an initiative from Connecticut Public, the state’s local NPR and PBS station, to elevate Latino stories and expand programming that uplifts and informs our Latino communities. Visit CTPublic.org/latino for more stories and resources. For updates, sign up for the SOMOS CONNECTICUT newsletter at ctpublic.org/newsletters.

SOMOS CONNECTICUT es una iniciativa de Connecticut Public, la emisora local de NPR y PBS del estado, que busca elevar nuestras historias latinas y expandir programación que alza y informa nuestras comunidades latinas locales. Visita CTPublic.org/latino para más reportajes y recursos. Para noticias, suscríbase a nuestro boletín informativo en ctpublic.org/newsletters.

The independent journalism and non-commercial programming you rely on every day is in danger.

If you’re reading this, you believe in trusted journalism and in learning without paywalls. You value access to educational content kids love and enriching cultural programming.

Now all of that is at risk.

Federal funding for public media is under threat and if it goes, the impact to our communities will be devastating.

Together, we can defend it. It’s time to protect what matters.

Your voice has protected public media before. Now, it’s needed again. Learn how you can protect the news and programming you depend on.

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