Japanese Black Trifele Tomato (Solanum lycopersicum 'Japanese Black Trifele')

Japanese Black Trifele Tomato

Solanum lycopersicum 'Japanese Black Trifele'

Deep purple-black fruits carry rich, sweet-tart flavor—heritage heirloom tomato. Indeterminate vining edible plant; common name: Japanese Black Trifele Tomato.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Requires full direct sunlight for 6–8 hours daily for optimal fruit set; tolerate partial shade during midday heat in extreme summer temperatures
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Watering Water deeply when the top 5 cm of soil is dry; avoid overhead watering to reduce risk of fungal foliar diseases
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Temperature Optimal growth temperature 21–27℃; avoid temperatures below 10℃ which stunt seedling and fruit development
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Characteristics

  • Leaf: Compound pinnate leaves with serrated margins, fuzzy medium-green foliage
  • Fruit: Oval, dusky purple-black with green shoulders when fully ripe; 50–70 g per fruit
  • Stem: Vining, hairy stems with small tendrils for climbing and anchorage
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Care Guide

Watering

Keep soil consistently moist but not waterlogged; water early in the morning to minimize evaporation

Fertilization

Feed every 2 weeks with balanced organic fertilizer. Avoid over-fertilizing with nitrogen to prevent excessive foliage growth at the expense of fruit production

Banana peel compost tea:Soak fully composted banana peels in water for 24 hours; dilute the tea 1:20 for root drenching; discard solid peels to avoid attracting pests
Pruning
  • Remove suckers (side shoots between main stems and branches) to direct energy to main vines and fruit production
  • Trim yellowing or diseased leaves to improve airflow and reduce disease risk
  • Tie vining stems to stakes or a trellis to support heavy fruit clusters and prevent breakage
  • Prune top growth in late summer to encourage ripening of remaining green fruits before frost
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Leaves and stems contain solanine; ingestion may cause vomiting, diarrhea, or lethargy; ripe fruit is safe

Humans: Leaves and stems contain solanine; ingestion causes mild gastrointestinal upset; ripe fruit is non-toxic

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Garden Uses & Culture

Culture: Heritage heirloom cultivar prized for its unique dark fruit color and complex, sweet-tart flavor profile

Usage: Edible fruit for fresh eating, gourmet salads, and homemade sauces; ornamental foliage and dark fruit for garden display