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Tomato - Thessaloniki (Indeterminate) seeds

$299 USD
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Description

The Thessaloniki Tomato is a Greek heirloom. A tomato so epic that Homer could have written an ode to its plump round fruits that ripen from golden yellow to vivid red, high yields in high temps, and a rich, earthy flavor that’s well-balanced between sweet and acidic. This one’s a keeper, both in the garden and on the countertop. By the time you eat a few of these, you may even be able to pronounce it.

These Indeterminate Thessaloniki Tomato Seeds produce Greek heirloom tomatoes known for their high yields, rich flavor, and adaptability to warm climates. This variety is characterized by its vigorous, indeterminate growth habit, requiring trellis support and regular pruning to manage its vigorous vine. The tomatoes are medium-sized, ripening from golden yellow to bright red, and are valued for their well-balanced flavor, combining sweetness and acidity.

Recognized for heat tolerance, these seeds are suitable for planting in full sun environments during spring and summer, with a germination period of 7-14 days at soil temperatures between 75°F-95°F. The plants require soil with a pH level of 6.0-6.5 and should be spaced approximately 24 inches apart within rows spaced 36-48 inches apart for optimal growth. 

Indeterminate Thessaloniki Tomato Seeds are ideal for gardeners seeking a heat-tolerant, high-yielding tomato variety that matures in about 75-80 days, suitable for fresh eating, canning, and storage. This heirloom Greek variety is well-suited for home gardens and small-scale commercial growers aiming to produce versatile, flavorful tomatoes. 

  • Well-balanced flavor
  • Heat tolerant
  • Early producer
  • Stores well

SEED PLANTING INFO

  • Botanical name: Solanum lycopersicum
  • Growth type: Indeterminate, trellis support, regular pruning 
  • Tomato size: Medium
  • Depth to plant seeds: .25" deep
  • Spacing between plants: 24" apart
  • Spacing between rows: 36"-48" apart
  • Days to germinate (sprout): 7-14 days
  • Germination soil temps: 75F-95F
  • Soil needs: 6.0-6.5 pH
  • Sun needs: Full sun
  • Frost hardy: No
  • Planting season: Spring, summer
  • # of plants per sq. ft.: Appx. 1 plant per 2 sq. ft.
  • Days to maturity: 75-80 days

Click here to view our full Tomato grow guide

Good companion plants: Basil, Borage, Onion, Parsley, Pepper

Frequently Asked Questions

What makes Thessaloniki heirloom tomatoes special compared to other tomato varieties?
Thessaloniki heirloom tomatoes are notable for their rich, balanced flavor and their impressive high yields, even in high temperatures. Their vibrant color transition from golden yellow to bright red adds visual appeal, making them a favorite for fresh eating and canning. As an heirloom variety, they also carry historical and regional significance.
Are Indeterminate Thessaloniki Tomato Seeds suitable for growing in hot climates?
Yes, Indeterminate Thessaloniki Tomato Seeds are recognized for their heat tolerance, making them suitable for warm climates and high-temperature growing conditions. They maintain good productivity when exposed to full sun and heat.
How long does it typically take for these seeds to produce ripe tomatoes?
Typically, these tomato plants take about 75 to 80 days from planting to reach maturity and produce ripe tomatoes. They are considered early producers among indeterminate varieties.
What are the best growing conditions for the Indeterminate Thessaloniki Tomato Seeds?
For best results, plant these seeds in full sun with soil that has a pH of 6.0 to 6.5, at temperatures between 75°F and 95°F. Ensure proper spacing of about 24 inches between plants and 36-48 inches between rows for optimal growth.
How should I support the indeterminate growth habit of these tomato plants?
Support the indeterminate growth habit by using trellis support and regularly pruning the vines. This helps manage the vigorous vine growth and improves airflow and fruit development.
Can these Thessaloniki heirloom tomato seeds be grown in full sun?
Absolutely, these Thessaloniki heirloom tomatoes thrive in full sun, which is essential for their vigorous growth and high yields. They should be planted in a location that receives direct sunlight for most of the day.
What flavor characteristics do Thessaloniki tomatoes have?
Thessaloniki tomatoes feature a well-balanced flavor profile that combines sweetness with a mild acidity, resulting in a rich and earthy taste. Their flavor makes them excellent for fresh eating, sauces, and storage.
Are these seeds suitable for small-scale commercial growing or home gardens?
Yes, the high yield, adaptability, and flavor profile make these seeds ideal for both home gardeners and small-scale commercial growers looking to produce versatile, flavorful tomatoes.
How do I plant and care for Indeterminate Thessaloniki Tomato Seeds for optimal yields?
Plant the seeds approximately 0.25 inches deep in warm soil, spaced about 24 inches apart. Regular pruning, trellis support, and full sun exposure are key to maximizing yields, along with consistent watering.
What are some good companion plants to grow alongside Thessaloniki heirloom tomatoes?
Good companion plants include basil, borage, onion, parsley, and peppers, as they can enhance growth and flavor while helping to deter pests. These combinations create a healthy, productive garden environment.

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Product Customer Reviews

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Product: Tomato - Thessaloniki (Indeterminate) seeds

Average Customer Rating: 4.00 out of 5 stars

Total Number of Reviews: 1 customer reviews

Customer Satisfaction Level: Very Good - Satisfied Customers

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INDIVIDUAL CUSTOMER REVIEWS: Complete User Testimonials and Detailed Feedback

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Recent Customer Reviews (1 reviews shown):

  • --- CUSTOMER REVIEW ENTRY ---

    Review Title: THESSALONIKI

    Customer Rating: 4 out of 5 stars (Very Good)

    Reviewer Name: Rebecca N. (Verified Purchase)

    Review Date: 2025-03-16

    Customer Feedback:

    Planted two seeds, one came up and is moving along well. Germinated in the expected time and has already sprouted it's first set of true leaves. Wish both would have sprouted but if I don't see any action on the second one by next week I'll plant another. Sometimes one seed is a little behind the other, so we'll see. I'm planting at least 50 varieties of tomatoes to taste so as long as I get something out of each plant, I'm happy. It's when all the seeds are duds that I get upset.
    --- END CUSTOMER REVIEW ---

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FAQs
Where can you ship your seeds to?
  •  USA: YES, we ship all across the United States.
  •  Puerto Rico, Hawaii, and Alaska: NO, not at this time.
  •  CANADA: NO, not at this time. 
  •  International/Overseas: NO, not at this time.
How much is shipping across the USA?
How do you ship your seeds?
    • We ship seeds via US Postal Service (unless otherwise noted).
    • If you need to have your seeds shipped via UPS or FedEx, just let us know.
    What is a Seed Bank?
    • A Seed Bank is your own personal source for seeds designed to be used in the event seeds can no longer be purchased on the open-market or in the event seed supplies are severely restricted. 
    • Storing seeds helps protect individuals and communities against catastrophic events such as rising food prices, natural disasters, food shortages, diseases and/or war.
    • A Seed Bank is a collection of non-hybrid & open-pollinated seeds that can be stored for multiple years and used in the event of an emergency.
    Are all your seeds NON-Genetically Modified (Non-GMO)?
    • Yes!  We don't touch or deal with anything that has been genetically modified. 
    • We have signed the Safe Seed Pledge and work very hard to ensure all our seeds are 100% Non-Genetically Modified (Non-GMO).
    Are all your seeds Organic?
    • We do sell organic seeds - Seeds that are certified organic will be labeled as such on the site.  All the seeds listed on the website are 100% Non-GMO. 
    What do you mean by growing Organic food?
    • Currently, the USDA says that in order for something to be organic it CANNOT be grown with any chemical fertilizers, synthetic substances, irradiation, sewage sludge, or genetically modified organisms (GMOs).
    • As long as you start by using Non-GMO seeds in your garden and continue to grow them without using chemical fertilizers, synthetic substances, or irradiation, sewage sludge then technically your garden will be "Organic". What Organic really means?
    • Being "Organic" means that irradiation, sewage sludge, synthetic fertilizers, prohibited pesticides, and genetically modified organisms (GMO's) were not used during the growing process. 
    What is a Genetically Modified seed?
    • Genetically modified (GM) seeds have been genetically altered in a lab somewhere and have had specific changes introduced into their DNA, also called Genetically Modified Organisms (GMO's). 
    • The interesting thing about GM seeds is that gardeners are not able to save the seeds after harvest and must buy seed every year from the corporation that sold them to you.
    • Click here to read more about GMOs
    What does it mean when you say the seeds are Non-Hybrid and Open-Pollinated?
    • Non-hybrid seeds means they have NOT been cross-bred with any other strain or variety of plant. Learn the difference betwen Hybrid vs. Heirloom
    • Non-Hybrid seeds are the most natural and purest form of seed anyone can find. 
    • They grow just like they do naturally in nature. 
    • Best of all gardeners can save the seeds after each harvest and be assured they will grow the same every time. 
    • Open-pollinated seeds means the plants are pollinated by insects, bees, birds, wind, and other natural ways. 
    • The good thing with open-pollinated plants is that it will continue to reproduce new generations of those plants.
    Do you accept returns?
    • Yes.  Your satisfaction is our number one priority.  A 15% restocking fee will be applied to all returned orders. We will either replace or refund your money within 30 days if you are not completely satisfied.
    Can I collect my seeds after harvest?
    • Absolutely! All of the seeds we sell are 100% Open-Pollinated, which means you can collect the seeds from your harvest, dry them, and store them for next year. Read Seed Saving Tips
    How many years will my seeds last?
    • Each seed has been processed for long-term storage, which directly translates into increasing the shelf-life by many years. We use the methods developed and approved by the U.S. Dept. of Agriculture (USDA) for drying, processing, and packaging seeds for long-term storage.

    • We recommend storing your seeds in these high-quality seed storage vaults and containers.  They are the best way to extend the shelf-life of your seeds. These Seed Vaults have the easiest open and close vacuum sealing system of any container on the market! Best of all they're: Air tight. Water Resistant. Pest, insect, rodent resistant! AND ... FREEZER-SAFE! Click here to shop seed storage vaults and containers

    • The best way to ensure your seeds remain viable for many years is to store them in a cool and dry location. A freezer is usually the best place to store your seeds.


    About Our Seeds


    GMO-FREE

    Our seeds are 100% ✓ NON-Genetically Modified  ✓ HEIRLOOM ✓ OPEN-POLLINATED (OP) ✓ RAW, NATURAL & UN-TREATED // Our seeds do not contain any exogenously inserted embryogenesis deactivator genes caused by human intervention or by any other method.

    We also offer a few hybrid varieties on this website and they will be labeled as such on product listing. 

    Read more info about GMOs & watch videos
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    All our seeds are packaged in high quality re-sealable moisture-proof packs designed to protect & extend the shelf-life of your seeds. We do NOT use paper envelopes. 

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    WE DO NOT GROW OR SELL SEEDS FROM MONSANTO OR ANY OTHER COMPANY THAT IS AFFILIATED WITH GMO.

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    OUR PLEDGE TO YOU

    Agriculture and seeds provide the basis upon which our lives depend. We must protect this foundation as a safe and genetically stable source for future generations.

    For the benefit of all farmers, gardeners and consumers who want an alternative. We pledge to you that we do not knowingly buy or sell genetically engineered seeds or plants.  The mechanical transfer of genetic material outside of natural reproductive methods and between genera, families or kingdoms, poses great biological risks as well as economic, political, and cultural threats.

    We wish to support agricultural progress that leads to healthier soils, genetically diverse agricultural ecosystems and ultimately healthy people and communities.

    We do not buy - OR - grow any seed from large corporations that make Genetically Engineered seeds.  We don't touch that stuff and we never will.

    The seeds we offer aren't like varieties you'd typically find at a garden center. 

    Every variety we offer is 100% OP (open-pollinated).  Open-pollination means that you can safely save the seed after harvest and preserve a collection of heirloom seed for many generations to come.

    To make it perfectly clear ... Our seeds do not contain any exogenously inserted embryogenesis deactivator genes caused by human intervention.

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