🍅 Quick take: Provenzano (also grown as Provenzano Heart) is a legendary indeterminate Italian heirloom known for pumping out gargantuan red beefsteaks and blunt oxhearts that routinely weigh between 28 oz and over 2 lbs (800-1000 g+). While fruit count per plant is typically modest (4 to 6 fruits), the interior is packed with solid, nearly seedless meat with a sweet, low-acid finish.
Growers’ Notes and Field Trials (USDA Zones 4-5)
Seeds were shared with me by LenaA. Tall indeterminate vine that ran on the late side. It only pushed four fruits all season, but every single one of them was huge, heart-shaped, solid red, and had a very pleasant sweetness to the taste.
Grew mine inside the greenhouse. Gave me 5 to 6 absolute whoppers pushing 2 lbs (1 kg) or more each. Rated the flavor a solid 4 out of 5.
Giant Fruit Sizes, Blunt Hearts vs. Globes, and Open-Ground Culture
Not completely sure if we have the exact same strain here or not. Mine arrived labeled as Provenzano (Heart).Ran it outdoors in the open garden, though I can’t fairly judge overall yield since my outdoor patch was either freezing cold or baking in a heatwave all summer 😄
Flavor-wise, I really loved it: very good, noticeable sweetness, dense meaty flesh, and hardly any seeds at all. Fruits averaged 8-10 oz (220-280 g). Definitely running this again next season under greenhouse cover. Outdoors, it was actually one of the earliest varieties to start ripening.
Still trying to figure out how to upload pictures from my phone. My seeds came from Valentina Redko.The vine didn’t set any runts or average-sized fruit at all: every single tomato was over 28 oz (800 g). Looked like massive round bowling balls. Meaty, but somewhat on the dry side with very few seeds.
Sharing a couple photos of our Provenzano harvest:
Full Summary: Vine Habit, Fruit Mass, Flavor, and Culture
- 🌿 Plant Type: Tall, vigorous indeterminate vine. Demonstrates remarkable resilience, ripening early in open ground despite cold spells, but reaches maximum fruit size inside high tunnels and greenhouses.
- 🍅 Fruit Weight & Shape: Massive prize-winning potential. In greenhouses, vines routinely throw huge 28 oz to 2+ lb (800-1000 g+) fruits shaped like giant globes or blunt oxhearts. In unprotected outdoor beds, fruits scale down to 8-10 oz (220-280 g).
- 🥩 Meat & Seed Ratio: Exceptionally dense, solid flesh with virtually no seed gel and very few seeds per fruit. Can lean slightly dry, making it ideal for rich paste or thick gourmet sandwich slices.
- 👅 Flavor Profile: Sweet and mild with classic old-fashioned heirloom tomato undertones.
- 📈 Yield Count: Low total fruit count per vine (often 4 to 6 fruits total), but extraordinarily heavy overall poundage due to individual fruit mass.
- 🧬 Strain Variations: Circulates both as a classic blunt-heart (Provenzano Heart) and a giant round globe/beefsteak, depending on whether the seed line originated via Redko or Canadian/US collector trades.
- 🌎 Trial Conditions: Evaluated in cold short-season climates across USDA Zones 4 and 5 (Leningrad, Kostroma, and Ryazan regions).
🍅 Grown Provenzano? Did you get globes or true oxhearts? Drop your weights and photos in the comments below!
👨🌾 Editor’s Note: Italian Provenzano Heritage & Phenotypic Drift
Provenzano is an Italian family heirloom brought to North America by Italian immigrant Joe Provenzano. In vintage seed catalogs (and through Carolyn Male’s heirloom trials), it was recognized as a massive red blunt oxheart/beefsteak. In European enthusiast collections, two phenotypes are widely observed: a true blunt-heart form (Provenzano Heart) and a colossal globular beefsteak strain distributed by Russian seed saver Valentina Redko. Both strains preserve the legendary low seed count and heavyweight bulk typical of southern Italian paste-beefsteak crosses.
Provenzano is an Italian family heirloom brought to North America by Italian immigrant Joe Provenzano. In vintage seed catalogs (and through Carolyn Male’s heirloom trials), it was recognized as a massive red blunt oxheart/beefsteak. In European enthusiast collections, two phenotypes are widely observed: a true blunt-heart form (Provenzano Heart) and a colossal globular beefsteak strain distributed by Russian seed saver Valentina Redko. Both strains preserve the legendary low seed count and heavyweight bulk typical of southern Italian paste-beefsteak crosses.
