How to Grow Tiny Rubies
Tiny Rubies
Solanum lycopersicum var. cerasiforme
vegetableTiny Rubies is a dwarf, indeterminate cherry tomato variety that produces abundant small, deep red fruits with rich, sweet flavor. It's compact enough for containers and small spaces while maintaining prolific fruit production throughout the season. This heirloom-style tomato is perfect for gardeners seeking ornamental productivity combined with excellent taste.
When should you plant Tiny Rubies in your zone?
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Example Tiny Rubies timeline · Pittsburgh, PA (Zone 6b)
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Plant Tiny Rubies
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 Tiny Rubies
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Tiny Rubies dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; grow as annual in cooler zones, perennial in zones 9-10
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Seedling
3-4 weeksTiny seed leaves emerge within 5-10 days. First true leaves appear small and serrated. Plant is delicate and pale green.
Keep soil consistently moist but not soggy. Provide 14-16 hours of bright light daily under grow lights or on sunny windowsill. Maintain temperature 70-75°F. Avoid damping-off by ensuring good air circulation.
Vegetative Growth
4-6 weeks before transplanting outdoorsPlant develops multiple sets of true leaves and becomes bushier. Compact dwarf habit becomes apparent. Stems thicken and plant grows vigorously.
Provide full sun or strong grow lights. Begin gentle outdoor acclimation (hardening off) 7-10 days before planting. Keep temperatures 65-75°F. Thin multiple seedlings, keeping strongest. Pinch shoot tips occasionally to encourage branching on young plants.
Flowering
3-4 weeks into seasonYellow flower clusters (5-10 flowers per cluster) appear at leaf axils along stem. Flowers are small, star-shaped, and fragrant.
Maintain consistent watering and avoid nitrogen-heavy fertilizers. Gently shake plants or brush flowers with hand daily to ensure pollination. Support developing branches with small stakes or cages. Temperatures 65-75°F are ideal for fruit set.
Fruiting & Maturation
Continuous until frost; 60+ days of active fruitingTiny green marble-sized fruits develop and gradually enlarge to 1-1.5 inches diameter. Color progressively deepens from green to deep ruby red over 20-30 days per cluster.
Continue consistent watering; irregular watering causes blossom-end rot and fruit cracking. Fertilize every 2-3 weeks with balanced or slightly phosphorus-rich fertilizer. Prune lower leaves on indeterminate varieties for air circulation. Monitor for pests and diseases closely.
Harvest
Ongoing from 70 days onward until first frostFruits are deep red, glossy, and slightly soft when fully ripe. Plant continues producing new flowers and fruits until frost.
Harvest fruits at full color for peak flavor. Leave vine slightly attached rather than pulling aggressively. Morning harvest after dew dries yields best flavor. Remove diseased or damaged fruits immediately. Prune lower foliage to 12 inches above ground to improve air flow and disease prevention.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick large caterpillars early morning or evening. Use Bacillus thuringiensis (Bt) spray for smaller infestations. Encourage parasitic wasps by planting flowering herbs nearby.
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Spray neem oil or insecticidal soap on leaf undersides every 7-10 days. Use reflective mulch. Introduce predatory insects like ladybugs. Avoid excessive nitrogen fertilizing.
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Increase humidity and mist foliage regularly. Spray with neem oil or insecticidal soap. Remove heavily infested leaves. Introduce predatory mites.
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Remove lower leaves (first 12 inches) as preventive. Improve air circulation and avoid overhead watering. Apply copper fungicide or sulfur early in season. Remove diseased foliage immediately.
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Plant resistant varieties. Avoid overhead watering. Apply copper-sulfur fungicides preventively in humid conditions. Remove and destroy infected foliage and fruits immediately.
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Plant resistant varieties when available. Ensure good drainage and avoid waterlogging. Remove infected plants entirely. Rotate crops yearly. Sterilize tools.
Uses
Fresh eating and snacking
CulinaryTiny Rubies' small, bite-sized fruits with rich, sweet flavor are perfect for fresh snacking straight from the plant, in salads, or halved for appetizers. Their concentrated sweetness and firm texture make them ideal for eating raw. [source]
Cooking and sauces
CulinaryThe abundant small fruits can be roasted whole, simmered into fresh sauces, or used in pasta dishes. Their natural sweetness reduces or eliminates the need for added sugar in tomato preparations. [source]
Preserving and canning
CulinaryThe prolific yields of Tiny Rubies make them excellent for making tomato paste, sauce, or whole-fruit preserves. Their small size allows whole-fruit canning without further processing. [source]
Container and ornamental gardening
HouseholdThe compact, dwarf growth habit and profuse fruiting make Tiny Rubies exceptional for pots, hanging baskets, patios, and small spaces. The abundant glossy red fruits provide both edible and decorative value throughout the season. [source]
Nutritional and antioxidant benefits
MedicinalTiny Rubies tomatoes are rich in lycopene, vitamins C and K, and antioxidants. Regular consumption supports cardiovascular health, immune function, and may provide anti-inflammatory benefits. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Begin harvesting when fruits are deep red and slightly yield to gentle pressure, typically 70+ days after transplanting. Fruits can be left on vine for 2-4 additional days after color change for maximum flavor development. Twist or gently clip fruits from vine to avoid damaging branches. Cherry tomatoes should come off easily when ripe. Morning harvest after dew dries yields best flavor and shelf life. Tiny Rubies produces continuously until frost; harvest regularly to encourage more flowering. In late season (2-4 weeks before frost), pick remaining fruits at pink-to-light-red stage to ripen indoors.
Fun Facts
- 🌱 Tiny Rubies can produce 100-200+ fruits per plant in a season, making them one of the most prolific tomato varieties for their size.
- 🌱 Despite their dwarf stature (12-24 inches), Tiny Rubies remain indeterminate, meaning they continue growing and producing fruit throughout the season until frost, unlike determinate varieties that stop growth after setting fruit.
- 🌱 Cherry tomatoes like Tiny Rubies are closer genetically to the original wild tomatoes of South America than large slicing tomatoes, retaining more of the intense flavor complexity of ancestral varieties.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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