Carbon
Single source · Reviewed Sep 9, 2026
Values marked like this (estimated) are model estimates, not confirmed from a source.
Open-pollinated beefsteak from unknown. Black beefsteak slicer with large, flattened fruit. Ready in about 80 days from transplant.
- Open-pollinated
- 80 days to maturity (from transplant)
- Indeterminate
- Large fruit
- Easy-moderate (estimated)
At a glance
- Fruit type
- Beefsteak 10–16 oz (280–450 g) · Flattened globe
- Leaf type
- Regular leaf
- Plant height
- 5–8 ft (150–240 cm) Tall
- Spacing
- 24 × 39 in (60 × 100 cm) (estimated)
- Sunlight
- Full sun
- Position
- Handles open positions
- Growing sites
- Greenhouse · Polytunnel · Open ground · Container
- Container growing
- Not suited to pots
- Skin
-
- Black
- Interior
- Not recorded
Plant size and habit
Tall · Indeterminate
5–8 ft (150–240 cm) · Regular leaf
Carbon 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 5–8 ft (150–240 cm).
Flavor
“Black beefsteak slicer with large, flattened fruit.”
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
- Fresh & salads
- Slicing
Origin
A black-fruited beefsteak slicer with large, flattened fruit. Origin country is not recorded by Tatiana's TOMATOBase.
Sources
Where to buy seeds
| Shop | Offer | Price | Packet | Stock | |
|---|---|---|---|---|---|
| Tomato Growers Supply Company | Seeds | $3.35Checked Sep 16, 2026 | Pack (30 seeds) | Check availability | Buy |
- BuyTomato Growers Supply CompanySeeds
Pack (30 seeds)
Check availability
$3.35Checked Sep 16, 2026
Links may earn us a commission at no cost to you. Prices checked Sep 16, 2026; not live.
All photos
-
Carbon tomatoes ripening on the vine under cover -
A truss of Carbon tomatoes -
Carbon tomato plant in a garden bed with ripe fruit on the vine -
A ripe Carbon tomato held in a gardener's hand -
Freshly picked Carbon tomatoes -
Carbon tomato sliced in the kitchen
Questions
How long does Carbon take to mature?
Carbon is ready in about 80 days from transplant.
Does Carbon need staking?
Carbon 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 5–8 ft (150–240 cm).
Can Carbon be grown in a container?
Carbon is better suited to open ground or a greenhouse bed than a container.
Is Carbon resistant to disease?
No disease resistance is documented for Carbon.
See also
Other beefsteak varieties people put next to this one.
Grows like this one
Indeterminate, mid-late, full sun. Same support, same calendar.
