How to Grow Oaxacan Jewel Tomato
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Oaxacan Jewel Tomato
Solanum lycopersicum 'Oaxacan Jewel'
vegetableOaxacan Jewel is a stunning heirloom tomato variety from Mexico featuring deep purple-red fruits with green striping and rich, complex flavor. These medium-sized indeterminate plants produce abundantly throughout the season and are prized by gardeners for their beautiful appearance and exceptional taste. The variety thrives in warm climates and is known for good disease resistance.
When should you plant Oaxacan Jewel Tomato in your zone?
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Example Oaxacan Jewel Tomato timeline · Pittsburgh, PA (Zone 6b)
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Plant Oaxacan Jewel Tomato
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Oaxacan Jewel Tomato
Around Jul 1≈ 75 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Oaxacan Jewel Tomato dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 6-9; can grow in 5-10 with season extension
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Seedling
4-6 weeksTiny plants with 2 cotyledons (seed leaves) followed by true leaves; bright green and delicate
Keep soil consistently moist but not waterlogged. Provide 14-16 hours of bright light daily under grow lights. Maintain temperature around 70°F. Begin fertilizing lightly at 4-5 weeks old with diluted balanced fertilizer.
Vegetative Growth
3-4 weeks after transplantingStrong, bushy plants developing multiple lateral branches; dark green foliage with no flowers yet
Harden off transplants over 7-10 days before planting outdoors. Plant deeply to encourage strong root system. Install sturdy support/stakes early. Begin light pruning of lower suckers (optional, helps air circulation). Fertilize every 2 weeks with balanced tomato fertilizer.
Flowering
3-4 weeksYellow flower clusters appear at leaf axils; plant continues growing tall with visible flower buds transitioning to open blooms
Maintain consistent watering; irregular watering causes flower/fruit drop and blossom end rot. Switch to fertilizer lower in nitrogen, higher in phosphorus (tomato/fruiting formula). Ensure excellent air circulation by removing lower leaves. Pollinate flowers gently by hand or let bees pollinate naturally.
Fruiting & Ripening
6-8 weeksSmall green marble-sized fruits appear and gradually enlarge; fruit develops characteristic purple-red color with green stripes as it matures, progressing from dark green to deep purple-red
Continue consistent watering and fertilize every 2-3 weeks with phosphorus-rich formula. Prune upper canopy foliage carefully to expose developing fruits to sunlight. Monitor for cracks caused by irregular watering. Support heavy fruit clusters with soft ties.
Harvest
8-12 weeks (continuous through frost)Fruits are deeply colored purple-red with green shoulders, firm, and fully sized. Indeterminate plants continue flowering and producing new fruit through season.
Harvest when fully colored and slightly soft to touch. Can pick at breaker stage (first blush of color) to ripen indoors. Continue watering and fertilizing to encourage continued production. Near season's end, reduce foliage to allow remaining fruits to ripen faster.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick daily, encourage parasitic wasps, spray with spinosad if infestation severe, plant dill and parsley nearby
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Yellow sticky traps, spray neem oil, insecticidal soap, remove heavily infested leaves
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Prune lower infected leaves, improve air circulation, remove plant debris, avoid overhead watering, apply copper fungicide
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Remove lower leaves, maintain good air circulation, mulch to prevent soil splash, apply copper or chlorothalonil fungicide, choose disease-resistant location
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Spray water forcefully on undersides of leaves, use neem oil or insecticidal soap, maintain humidity, remove heavily infested leaves
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Spray with water, yellow sticky traps, ladybugs/parasitic wasps, neem oil, insecticidal soap
Uses
Fresh Slicing & Salads
CulinaryOaxacan Jewel tomatoes are exceptional fresh—their complex, sweet flavor with subtle earthy notes makes them ideal for slicing into salads, sandwiches, and salsas. The striking purple-red color with green shoulders adds visual appeal to any dish. [source]
Sauces & Preservation
CulinaryThe rich, dense flesh and concentrated flavor make these tomatoes excellent for homemade pasta sauces, gazpacho, and canning. Their high solids content produces thick, flavorful sauce with minimal reduction time. [source]
Nutritional Benefits
MedicinalDark-colored heirloom tomatoes like Oaxacan Jewel contain elevated levels of lycopene and anthocyanins—powerful antioxidants associated with reduced cardiovascular disease risk and anti-inflammatory benefits. [source]
Ornamental Value
CraftThe stunning deep purple-red coloring with green striping makes Oaxacan Jewel tomatoes visually striking in garden settings and as table centerpieces. They're popular among gardeners for aesthetic appeal. [source]
Pollinator Support
WildlifeThe abundant yellow flowers attract bees and other pollinators throughout the growing season, supporting local pollinator populations while ensuring excellent fruit set and continuous harvests. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Pick fruits when fully colored (deep purple-red) and yielding slightly to gentle pressure. Oaxacan Jewels develop best flavor when ripened fully on the vine. Can harvest at breaker stage and ripen indoors on countertop if needed. Store at room temperature; never refrigerate as cold damages flavor. Plant continues producing through season until frost.
Fun Facts
- 🌱 Oaxacan Jewel originated in Oaxaca, Mexico, where tomato domestication began thousands of years ago; it represents a direct link to pre-Columbian agriculture.
- 🌱 The green striping on the fruit remains even when fully ripe—this is a desirable trait (not underripeness) and is characteristic of heirloom varieties with high anthocyanin content.
- 🌱 This indeterminate variety can grow 6-8 feet tall or more, requiring sturdy support, and will continue producing fruit heavily until frost, sometimes yielding 20+ pounds per plant in favorable conditions.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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