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How to Grow Riesentraube Tomato

Riesentraube Tomato

Solanum lycopersicum 'Riesentraube'

vegetable

Riesentraube is a German heirloom cherry tomato variety known for producing enormous clusters of small, sweet red fruits on indeterminate vines. The name means 'giant bunch' in German, referring to its characteristic large trusses of 15-40 tomatoes per cluster. This prolific variety is prized by gardeners for continuous harvests and exceptional flavor.

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Example Riesentraube Tomato timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Riesentraube Tomato

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Riesentraube Tomato

    Around Jul 1

    ≈ 75 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Riesentraube Tomato dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily minimum; 8+ hours preferred for maximum fruiting
💧
Water: Consistent moisture is critical; water deeply 1-2 inches per week. Maintain even soil moisture to prevent cracking and blossom end rot. Avoid overhead watering to reduce disease; use drip irrigation or water at soil level.
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Spacing: 24 inches
📅
Days to maturity: 75-85 days from transplant to first ripe fruit
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Planting depth: Plant transplants 2-3 inches deep (can bury stem for stronger root development); seeds 0.25 inches deep

Soil

Type: Well-draining, fertile loamy soil rich in organic matter
pH: 6.0-6.8
Amendments:
Compost Well-rotted manure Bone meal for phosphorus Balanced fertilizer (5-10-10 NPK)

Growing Zones

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Thrives in zones 5-10; can be grown as annual in zones 3-4 with protection

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

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Growth Stages

1

Seedling

2-3 weeks

Tiny plants with 2-4 leaves, 2-3 inches tall. Cotyledons followed by true leaves appearing.

Provide bright light 14-16 hours daily. Keep soil moist but not waterlogged. Maintain 65-75°F. Thin to strongest seedling if multiple sprout.

2

Transplant/Vegetative Growth

3-4 weeks

Young plants 6-12 inches tall being hardened off or recently planted in garden. Rapid leaf and stem development with no flowers yet.

Harden off for 7-10 days before transplanting. Bury stem deeper for stronger root system. Install support structure early. Begin fertilizing weekly with dilute balanced fertilizer.

3

Flowering

3-4 weeks

Plants 12-24+ inches tall with visible flower clusters. The characteristic large trusses form with multiple flower buds visible along the vine.

Continue consistent watering. Support developing trusses as they become heavy. Maintain steady fertilization with slightly higher phosphorus (8-12-4). Ensure 6+ hours direct sun daily for pollination.

4

Fruit Development & Ripening

4-6 weeks

Clusters of small green tomatoes (golf ball to walnut-sized) gradually turning red. Multiple trusses at various stages of ripeness simultaneously.

Continue weekly watering with 1-2 inches moisture. Remove lower leaves for air circulation. Prune suckers to focus energy on fruit. Continue fertilizing every 10-14 days. Watch for pests and disease.

5

Harvest & Continued Production

6-12 weeks until frost

Mature red fruit ready for picking from lower clusters while upper clusters still ripening. Indeterminate variety continues flowering and fruiting until frost.

Harvest ripe fruits regularly to encourage continued production. Continue watering and fertilizing. Remove any diseased foliage. Extend season with frost protection (row covers, mulch around base).

Companion Planting

Plan your garden →

Plant with:

Basil Parsley Carrot Marigold Nasturtium Borage Onion Garlic

Avoid planting near:

Fennel Dill Brassicas (cabbage, broccoli) Potato Other solanums in same location

Common Pests

  • Hand-pick large caterpillars daily. Use Bt (Bacillus thuringiensis) spray for small larvae. Encourage parasitic wasps.

  • Spray neem oil or insecticidal soap weekly. Use yellow sticky traps to monitor. Maintain leaf moisture with regular watering.

  • Strong water spray to dislodge. Spray neem oil or insecticidal soap. Introduce ladybugs or lacewings.

  • Increase humidity with regular watering. Spray with miticide or neem oil every 5-7 days. Remove heavily infested leaves.

  • Maintain consistent soil moisture. Apply calcium sources (crushed eggshells, gypsum). Avoid over-fertilizing with nitrogen.

Uses

🍳

Fresh eating & snacking

Culinary

Sweet, tangy cherry tomatoes perfect for eating fresh off the vine as a snack or tossed into salads. The abundant clusters make them ideal for family gardens where frequent harvesting is a pleasure. [source]

🍳

Preserving & canning

Culinary

Excellent for whole-fruit canning, pasta sauce, and tomato paste due to high sugar content and relatively small size. The prolific production makes them ideal for large batches of preserves. [source]

🍳

Pasta & sauce making

Culinary

Sweet flavor profile makes these tomatoes ideal for fresh pasta sauces, salsas, and gazpacho. The high yield supports making multiple batches of sauce for freezing. [source]

🏠

Heirloom seed saving

Household

As an open-pollinated heirloom variety, Riesentraube is excellent for seed saving. Gardeners can ferment and dry seeds for planting in subsequent years, preserving genetic diversity. [source]

🦋

Pollinator & beneficial insect habitat

Wildlife

The abundant flowers attract bees, hoverflies, and parasitic wasps that help control garden pests naturally. Dense foliage provides shelter for beneficial insects. [source]

Harvest Tips

Begin harvesting when fruits turn completely red and yield slightly to gentle pressure (typically 75-85 days after transplanting). Pick individual fruit by gently twisting and pulling, or pinch stem with pruners to avoid damaging the cluster. The heavy trusses benefit from early harvesting to reduce strain on the vine. Harvest regularly every 2-3 days to encourage continued production. Riesentraube fruits store 3-5 days at room temperature. For extended storage, pick at 'breaker stage' (first blush of color) and ripen indoors at 68-72°F.

Fun Facts

  • 🌱 Riesentraube means 'giant bunch' or 'giant grape' in German, named for its spectacular clusters that can produce 15-40 tomatoes in a single truss—sometimes the entire cluster is harvestable at once.
  • 🌱 This German heirloom variety has been passed down through generations since at least the 1950s, making it a valuable example of seed-saving culture in European gardening traditions.
  • 🌱 A single healthy Riesentraube plant can produce 200-400+ ripe tomatoes in a season under optimal conditions, making it one of the most prolific tomato varieties available to home gardeners.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Full Sun Heirloom Mulch pH Pollination Row Cover Sucker Transplant True Leaves
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