- Hybrid F1
- Grape
- 60 (estimated) days to maturity (from transplant)
- Indeterminate
- Red
Sweet Hearts
Hybrid F1 grape from Japan, 2005. Grape hybrid bred for high sugar and heavy, uniform set on long trusses. Ready in about 60 days from transplant.
Single source · Updated Sep 13, 2026 · Values marked like this (estimated) are estimates.
At a glance
- Fruit type
- Grape ~1 oz (15–25 g) · Oval (estimated)
- Leaf type
- Regular leaf
- Days to harvest
- 60 days (estimated) from transplant · Early
- 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
- Difficulty
- Easy-moderate (estimated) 2/5
- Skin
-
- Red
- Interior
-
- Red
Plant size and habit
Tall · Indeterminate
6–8 ft (180–240 cm) (estimated) · Regular leaf
Sweet Hearts 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
“Grape hybrid bred for high sugar and heavy, uniform set on long trusses.”
Growing calendar
60 (estimated) days from transplant Early
Timing shown for temperate climates; sow indoors 6–8 (estimated) weeks before your last frost date. Look up your last frost date by ZIP code →
Disease resistance
No documented disease resistances — protect this variety with good airflow and crop rotation.
Uses & tags
- Fresh & salads
- Snacking
- Roasting
- Kid friendly
- High yield
- Award winner
Origin
Sweet Hearts is an F1 grape hybrid bred by Sakata Seed Corporation and dates to 2005, with heavy, uniform fruit set on long trusses.
Sources
Where to buy seeds
Prices rechecked dailyAll photos
Questions
How do you grow a Sweet Hearts plant?
A Sweet Hearts plant grows 6–8 ft (180–240 cm) tall (estimated). Space plants 24 in (60 cm) apart in rows 35 in (90 cm) apart (estimated). Start seed indoors 6–8 weeks before your last frost (estimated); it germinates in 7–14 days (estimated). It needs full sun.
How long does Sweet Hearts take to mature?
Sweet Hearts is ready in about 60 days from transplant.
Does Sweet Hearts need staking?
Sweet Hearts 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 Sweet Hearts be grown in a container?
Sweet Hearts is better suited to open ground or a greenhouse bed than a container.
Is Sweet Hearts resistant to disease?
No disease resistance is documented for Sweet Hearts.
