German Johnson

Family: Solanaceae Nightshade

Planting Schedule

Provide your location or planting zone to unlock dates and add German Johnson to a garden.

Sink your senses into German Johnson’s rich, old-world tomato perfume—sweet, tangy, and deeply savory in one lush breath.

This beefsteak standout forms large, irregularly heart-shaped fruits with a satin-smooth, rosy-red skin and a juicy, meaty interior that stays satisfyingly firm. Grow it for bold fresh slicing and for spoonable sauces that showcase its full-bodied flavor from garden to pot.

Light: Full SunMaturity: 90 DaysHabit: Indeterminate

Botanical illustration of German Johnson

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German Johnson Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Mar 30th	Jul 20th	Oct 18th – Aug 29th
Zone 2b	Mar 20th	Jul 10th	Oct 8th – Aug 25th
Zone 3a	Mar 20th	Jul 10th	Oct 8th – Sep 1st
Zone 3b	Mar 24th	Jul 14th	Oct 12th – Sep 21st
Zone 4a	Mar 20th	Jul 10th	Oct 8th – Sep 24th
Zone 4b	Mar 18th	Jul 8th	Oct 6th – Sep 27th
Zone 5a	Mar 13th	Jul 3rd	Oct 1st – Sep 30th
Zone 5b	Mar 9th	Jun 29th	Sep 27th – Oct 5th
Zone 6a	Mar 6th	Jun 26th	Sep 24th – Oct 10th
Zone 6b	Feb 28th	Jun 20th	Sep 18th – Oct 16th
Zone 7a	Feb 23rd	Jun 15th	Sep 13th – Oct 20th
Zone 7b	Feb 13th	Jun 5th	Sep 3rd – Oct 28th
Zone 8a	Feb 4th	May 27th	Aug 25th – Nov 5th
Zone 8b	Jan 26th	May 18th	Aug 16th – Nov 12th
Zone 9a	Jan 9th	May 1st	Jul 30th – Nov 26th
Zone 9b	Dec 15th	Apr 6th	Jul 5th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	Continuous Production

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Stake
Planting Depth	Deep
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Culinary Notes

Chef's Note

German Johnson leans into beefsteak personality: lots of flesh, less watery runoff, so slices stay proud and sauces stay spoonable instead of thin. It’s the kind of tomato that tastes like it came from a smoky old pot—sweet, tangy, and savory—especially when you cook it just enough to concentrate, not bury.

Best Uses

thick slice sandwiches where it won’t collapse into bread
lightly cooked spoon sauce (short sauté/quick simmer) to keep it bold and lively
chopped tomato salad with minimal salt to preserve texture
roasted tomato service for jammy edges and clean sweetness

Flavor Profile

sweet-tang balance meaty, juicy flesh with a firm bite savory, old-world tomato perfume satin-smooth skin with minimal watery slip

Kitchen Pairings

garlic red onion extra-virgin olive oil aged balsamic vinegar fresh mozzarella pork

Frequently Asked Questions

Why are my German Johnson tomato leaves developing small grayish-brown spots with fuzzy growth, and what should I do?

This pattern is commonly gray leaf spot or related fungal issues in tomatoes (Solanum lycopersicum), especially when leaves stay wet and air is humid. Remove and discard infected leaves, improve airflow with wider spacing, and water at the soil level (not overhead). If it keeps spreading, apply a labeled fungicide suitable for tomatoes and repeat as directed, starting as soon as spots appear.

How often should I water German Johnson tomatoes during fruiting to avoid cracking and blossom-end rot?

During the main growing/fruiting phase, keep soil consistently moist but not soggy, typically watering about 1–2 inches per week depending on heat and container vs. ground. Aim for deep watering 1–3 times per week rather than frequent light splashes, and let the top 1 inch of soil dry slightly before watering again. Maintain steady moisture—irregular drying then heavy watering commonly leads to fruit cracking and can worsen blossom-end rot.

How can I tell when German Johnson tomatoes are ready to harvest at ~90 days?

Harvest when fruits are fully colored (uniform red for this type) and the shoulder area gives slightly when gently pressed. The fruit should detach with a light twist, with no long green, hard core near the stem. If frost is possible, pick at the turning stage and let them finish ripening indoors at room temperature.