Krupnaya Grozd (Large Cluster) Tomato Review & Photos

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🍅 Quick take: Krupnaya Grozd (Large Cluster) is an indeterminate, mid-season red oxheart tomato originating from Eastern Europe. It produces heavy yields of large, meaty, heart-shaped fruits that average around 12 oz (350 g), though some vendor descriptions claim they can reach over 2 lbs (1 kg). Growers appreciate its solid production and great late-summer flavor, but note it may need extra potassium to prevent yellow shoulders in intense heat. Full summary ↓

Growers’ Notes and Photos (USDA Zones 3-6 Experience)

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ElenaN (Elena) ⭐ Veteran Grower (28,513 posts)
📍 Kostroma, Russia (USDA Zone 3/4)

Mid-season indeterminate variety, reached about 5.5 feet (1.7 m) tall in the greenhouse. The yield is very good. Fruits are heart-shaped, meaty, with very few seeds, weighing up to 12.3 oz (350 g) (though the description claimed up to 2.2 lbs / 1 kg), beautiful, and bright red. At first, I didn’t care for the taste, but towards the end of summer, the flavor of these tomatoes got really good. A very low-maintenance variety.

Krupnaya Grozd tomato on the scale, photo by ElenaN (1)
Krupnaya Grozd tomatoes on the vine, photo by ElenaN (2)
Krupnaya Grozd tomato sliced, photo by ElenaN (3)

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svetakima (Svetlana) 🌱 Novice (57 posts)

Good afternoon!!! This year I bought Krupnaya Grozd tomato seeds online from a private seller. Could you tell me how many stems I should prune it to, and how many blossom clusters would you recommend leaving on this specific variety? There is just so little info about this tomato on the internet.

Edited April 10, 2015 by Drosera

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ElenaN (Elena) ⭐ Veteran Grower (28,513 posts)
📍 Kostroma, Russia (USDA Zone 3/4)

Good afternoon! I’d say prune it to NO MORE than 2 stems, because the fruits get very large. As for the clusters… I would just leave as many as it sets, I don’t thin out my clusters. My seeds were from Alexey Kulik (Ukraine).

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Marisha (Marina) ⭐ Pro Grower (3,652 posts)

This variety is super!! Excellent yield, good flavor.

Krupnaya Grozd tomato shape, photo by Marisha

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Lana_s_Kavkaza (Svetlana) ⭐ Veteran Grower (19,268 posts)
📍 Pyatigorsk, Russia (USDA Zone 6)

Finally got around to growing this variety. I liked it, the flesh is delicious. Make sure to give it potassium feedings, as it can get yellow shoulders from intense sunlight.

Full Summary: Plant, Yield, Taste and Storage

  • 🌿 Plant: Indeterminate, mid-season vine. Reaches around 5.5 ft (1.7 m) in a greenhouse. Growers recommend pruning it to no more than 1 or 2 main leaders to properly support the large fruit size.
  • 🍅 Fruit: Bright red, heart-shaped (oxheart) slicers. They are meaty with very few seeds. While some seed catalogs claim they can reach up to 2.2 lbs (1 kg), forum growers report an average maximum of around 12.3 oz (350 g).
  • 📈 Yield: Rated as excellent by multiple growers, setting heavy clusters that don’t require thinning.
  • 👅 Taste & Care: Flavor is good and highly praised for its meaty texture, though one grower noted it improved significantly late in the summer. It is considered low-maintenance, but in hot, sunny climates, it requires adequate potassium feedings to prevent “yellow shoulders” (hard, underripe tops).

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