Japanese Black Trifele

Tomato

Zone 9a Save Garden

Botanical illustration of Japanese Black Trifele

🌱 75d to harvest Indeterminate

Velvety, darkly alluring flavor leads the way—Japanese Black Trifele’s pear-shaped fruit ripens to a smoky mahogany-brown with a …

Crop Dates

Milestone	Date
Start Indoors	Jan 23rd
Last Frost	Mar 6th
Transplant / Sow Outdoors	May 1st
Harvest Begins	Jul 15th
Harvest Ends	Nov 26th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Cage
Planting Depth	Deep
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	7

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Frequently Asked Questions

What’s the most common tomato disease to watch for on Solanum lycopersicum, and how do I prevent it?

Watch for early blight (brown, target-like spots) and keep leaves as dry as possible to reduce spread. Water at the soil line, mulch under plants, and remove heavily spotted lower leaves early in the season so the plant’s canopy stays healthier. If problems start, apply a labeled fungicide for tomato/leaf spot according to package directions and repeat as directed.

How often should I water Japanese Black Trifele (Solanum lycopersicum) during the main growing phase?

During active growth and fruit set, aim to keep the soil consistently moist but not soggy—typically about 1 to 2 inches of water per week total, adjusted for heat and rainfall. Water deeply 1–3 times per week rather than daily, and make sure the top 6–8 inches of soil stays evenly damp. If soil dries out too much then re-wets, Solanum lycopersicum is more likely to crack and develop blossom-end rot.

How can I tell when Japanese Black Trifele tomatoes are ready to harvest?

Harvest when the fruits are fully sized and the skin has turned to a deep, dark color with a slight sheen, with a gentle give when pressed near the stem. The blossom end should not remain pale or hard, and the tomato should come off the vine with minimal tugging. For best flavor around day 75, pick at the first full-color stage and allow any slightly under-ripe fruit to finish indoors.

Velvety, darkly alluring flavor leads the way—Japanese Black Trifele’s pear-shaped fruit ripens to a smoky mahogany-brown with a subtle, sweet depth and a pleasantly rich, tomato-forward aroma. The flesh is tender and juicy with a balanced snap, making each bite feel lush rather than watery. Grow for standout fresh snacking, vibrant salads, and deep-toned sauces that showcase its distinctive dark color and complex taste.

Sowing Tips

Transplant Conditions

Wait until soil reaches 60°F and nights stay above 50°F before moving outdoors. Harden off for 7 days first.

Expert Note

Start in small pots/cells and transplant deeply (burying stem) once soil is consistently warm to avoid cold-stunting—especially for late cool-season heirlooms.