Growing Guide

The Complete Heirloom Tomatoes Guide

Discover the incredible world of heirloom tomatoes — varieties passed down for generations with flavors that remind you what a tomato should really taste like.

An heirloom tomato warm from the sun needs nothing but a pinch of salt

— Grower's Wisdom
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Why Heirloom Tomatoes?

Taste the difference generations made

Superior Flavor

Bred for taste, not shipping. Complex flavors developed over generations that commercial varieties can't match.

Genetic Diversity

Thousands of unique varieties preserve genetic traits that may be crucial for future food security.

Seed Saving

Open-pollinated varieties produce seeds you can save and replant year after year.

Cultural Heritage

Each variety carries history - from Cherokee farms to Italian hillsides to Amish communities.

Popular Heirloom Varieties

Each variety has its own story, color, and flavor profile

Brandywine

80-100 days
1-2 lbs

Color: Pink/Red

Flavor: Classic tomato flavor with perfect sweet-acid balance. The gold standard.

Dating to 1885, Amish origin. Most famous heirloom variety.

Tip: Needs staking. Prone to cracking - don't overwater.

Cherokee Purple

75-90 days
10-12 oz

Color: Dusky purple-brown

Flavor: Rich, complex, sweet with smoky undertones. Unique and unforgettable.

Cherokee Nation origin, passed down for generations.

Tip: Heat tolerant. Shoulders stay green when ripe - that's normal.

Green Zebra

75-80 days
3-4 oz

Color: Green with yellow stripes

Flavor: Tangy, zingy, bright acidity. Stays firm when ripe.

Developed by Tom Wagner in 1983. Modern heirloom.

Tip: Ripe when yellow stripes appear and fruit softens slightly.

Black Krim

70-80 days
8-16 oz

Color: Dark maroon/brown

Flavor: Bold, salty, slightly smoky. Deep complex taste.

From Isle of Krim, Black Sea region of Russia.

Tip: Very heat tolerant. Shoulders stay dark green.

San Marzano

78-85 days
4-6 oz

Color: Deep red

Flavor: Sweet, low acid, meaty. The sauce tomato.

Italian origin, grown near Mt. Vesuvius since 1700s.

Tip: Indeterminate. Best for paste, sauce, canning.

Yellow Pear

70-80 days
1-2 oz

Color: Bright yellow

Flavor: Sweet, mild, low acidity. Kid favorite.

Documented since 1805. Classic cherry heirloom.

Tip: Prolific producer. Great for snacking and salads.

Mortgage Lifter

85-95 days
1-4 lbs

Color: Pink

Flavor: Meaty, sweet, mild. Great slicer.

1930s WV - farmer paid off mortgage selling them.

Tip: Large vines need strong support. Few seeds.

Costoluto Genovese

78-85 days
8-12 oz

Color: Deep red, ribbed

Flavor: Intense, acidic, complex. Beautiful sliced.

Italian heirloom from Genoa region.

Tip: Deeply ribbed. Stunning on a caprese.

Growing Heirloom Tomatoes

Start indoors 6-8 weeks before last frost

Heirlooms need a long season to produce

Plant deep - bury 2/3 of the stem

Roots form along buried stem for stronger plants

Water consistently at soil level

Inconsistent watering causes cracking and blossom end rot

Stake or cage immediately

Most heirlooms are indeterminate and grow 6-8 feet tall

Prune suckers for larger fruit

Remove shoots between main stem and branches

Mulch heavily

3-4 inches of mulch conserves moisture and prevents soil splash

Regional timing: Check your local frost dates in our Planting Calendar to know exactly when to transplant outdoors in your area.

Heirloom vs. Hybrid: What's the Difference?

Heirloom Tomatoes
  • Open-pollinated (breed true from saved seeds)
  • Typically 50+ years old variety
  • Bred for flavor, not shipping
  • Unique colors, shapes, and sizes
  • Less disease resistant, shorter shelf life
Hybrid Tomatoes
  • Cross of two different parent varieties
  • Seeds don't breed true (must buy new)
  • Bred for yield, disease resistance, shipping
  • Uniform size and appearance
  • Often sacrifices flavor for practicality

When to Find the Best Heirlooms

Early Season

June-July

First heirlooms appear. Cherry varieties and early producers like “Stupice”

Peak Season

August-September

Maximum variety and flavor. This is when to stock up and preserve.

Late Season

October

Final harvests before frost. Green tomatoes available for frying/pickling.

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Find Heirloom Tomatoes at Farmers Markets

The best heirloom tomatoes come straight from local growers who pick them at peak ripeness. No grocery store can match the flavor of a market tomato.