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Heatmaster Hybrid Tomato Seeds
★ Best Seller Non-GMO

Heatmaster Hybrid Tomato

$4.50 Packet - 8 to 10 Seeds
Mix ’n Match: buy 20+ eligible packets and pay just $3.75 each

Only Packet sizes count toward the offer. PakPlus, ProPak, and Mega ProPak sizes are excluded.

Packet Size
Flat $7.99 shipping Germination guaranteed Non-GMO
Not sure when to plant in your area? Planting dates depend on your local frost dates and growing zone.
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Quick Facts
Days to Maturity75 days
SunlightFull Sun
Spacing24–36 Inches
Germination5–10 days
Growing Information

Growing Heatmaster Hybrid Tomato

‘Heatmaster’ is a hybrid tomato bred specifically to set quality fruit during intense summer heat. Deep red, globe-shaped tomatoes average about 7 to 8 ounces and have smooth, firm flesh with classic garden-tomato flavor.

Start ‘Heatmaster’ indoors for transplanting. Plant seeds about ¼ inch deep, space plants 24 to 36 inches apart, and grow in full sun. Compact determinate plants reach about 4 feet tall and are well suited to containers and smaller gardens. This variety is heat tolerant and disease resistant.

Ready to harvest in about 75 days, pick fruits once they reach full size and develop their deep red mature color.

Firm, flavorful, and heat tolerant, ‘Heatmaster’ is excellent for slicing, salads, sandwiches, and burgers.

  • Days to Maturity: 75 Days
  • Sow Method: Start Indoors
  • Sowing Depth: ¼ Inch
  • Plant Spacing: 24–36 Inches
  • Sun Exposure: Full Sun
  • Plant Height: 4 Feet
  • Fruit Size: 7–8 Ounces
  • Growth Habit: Determinate
  • Disease Resistance:
    • Verticillium Wilt
    • Fusarium Wilt (Races 1 and 2)
    • Alternaria Stem Canker
    • Stemphylium Gray Leaf Spot
    • Tobacco Mosaic Virus

Catalog Page: 13

    How to start

    Start Indoors

    Sowing depth

    ¼ Inch

    Plant height

    4 Feet

    Botanical name

    Solanum lycopersicum

    Questions

    FAQ

    How should I start these seeds?
    Recommended sow method: Start Indoors.
    How deep should I sow the seeds?
    Sow at a depth of ¼ Inch.
    How long until they germinate?
    Typical germination: 5–10 days.
    How far apart should I space them?
    Recommended spacing: 24–36 Inches.
    How much sun do they need?
    Recommended sun exposure: Full Sun.
    What’s your germination guarantee?
    We stand behind the germination quality of our seed. If you have a germination issue, contact our team and we'll help make it right.
    REAL GARDENERS, REAL RESULTS

    What Gardeners Are Saying

    Customer Reviews

    Based on 2 reviews
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    A
    Alan Kurtz
    Great in the Oklahoma heat.

    It's now August and still producing fruit while most of my other tomato plants are giving up !

    f
    fingary
    Heatmaster Tomato Seeds

    I had been given some of these seeds and planted one last summer. The heatmaster was my only plant that had significant production. I ordered more seeds this year.