Costoluto Fiorentino
Single source · Reviewed Sep 13, 2026
Values marked like this (estimated) are model estimates, not confirmed from a source.
Heirloom slicer from Italy. The Tuscan costoluto: flatter and more deeply lobed than the Genovese. Ready in about 80 days from transplant.
- Heirloom
- 80 (estimated) days to maturity (from transplant)
- Indeterminate
- Large fruit
- Moderate (estimated)
At a glance
- Fruit type
- Slicer 6–10 oz (170–280 g) · Ribbed (estimated)
- Leaf type
- Regular leaf
- Plant height
- 6–8 ft (180–240 cm) (estimated) Tall
- Spacing
- 24 × 35 in (60 × 90 cm) (estimated)
- Sunlight
- Full sun
- Position
- Handles open positions
- Growing sites
- Greenhouse · Polytunnel · Open ground
- Container growing
- Not suited to pots
- Skin
-
- Red
- Interior
-
- Red
Plant size and habit
Tall · Indeterminate
6–8 ft (180–240 cm) (estimated) · Regular leaf
Costoluto Fiorentino is an indeterminate plant that keeps growing and setting fruit until frost; it needs a stake, cage, or trellis for the whole season. Expect a plant of 6–8 ft (180–240 cm).
Flavor
“The Tuscan costoluto: flatter and more deeply lobed than the Genovese.”
Growing calendar
- Sow indoors
- Transplant out
- Harvest
Timing shown for temperate climates; sow indoors 6–8 weeks before your last frost date.
Disease resistance
No documented disease resistances — protect this variety with good airflow and crop rotation.
Uses & tags
- Slicing
- Sauce & paste
- Canning
- Heirloom classic
- Sauce workhorse
- Novelty color
Origin
Costoluto Fiorentino is the Tuscan counterpart to Costoluto Genovese, flatter and even more deeply lobed, with the same high acidity that survives long cooking. The two are frequently sold interchangeably despite being distinct selections.
Sources
Where to buy seeds
We're adding trusted seed sources for this variety.
All photos
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Costoluto Fiorentino tomatoes ripening on the vine under cover -
A truss of Costoluto Fiorentino tomatoes -
Costoluto Fiorentino tomato plant in a garden bed with ripe fruit on the vine -
A ripe Costoluto Fiorentino tomato held in a gardener's hand -
Freshly picked Costoluto Fiorentino tomatoes -
Costoluto Fiorentino tomato sliced in the kitchen
Questions
How long does Costoluto Fiorentino take to mature?
Costoluto Fiorentino is ready in about 80 days from transplant.
Does Costoluto Fiorentino need staking?
Costoluto Fiorentino is an indeterminate plant that keeps growing and setting fruit until frost; it needs a stake, cage, or trellis for the whole season. Expect a plant of 6–8 ft (180–240 cm).
Can Costoluto Fiorentino be grown in a container?
Costoluto Fiorentino is better suited to open ground or a greenhouse bed than a container.
Is Costoluto Fiorentino resistant to disease?
No disease resistance is documented for Costoluto Fiorentino.
See also
Other slicer varieties people put next to this one.
Grows like this one
Indeterminate, mid-late, full sun. Same support, same calendar.
