Interlaken Seedless Grape | Early Sweet Table Grape Vine

Interlaken Grape

5 Gallon

$86.00

1/5

Interlaken Grape

Grape Table ’Interlaken‘, Vitis labrusca ’Interlaken‘

A very early, seedless grape with sweet, crisp berries and vigorous growth, perfect for cool climates.

$86.00

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Bay Area–Based Nursery

We specialize in plants grown and delivered in their original pots and soil.
Because of their size and weight, our plants are not suitable for long-distance shipping and are delivered locally to ensure health and quality.

While delivery is limited to our local service area, we’re happy to support garden design and plant selection remotely.

For local plant professionals, we’re always glad to connect and explore ways to support your customers.

The Interlaken Grape is a beloved, early-ripening seedless variety, prized for its heavy crops of sweet, crisp, golden-green berries. Developed at Cornell University's New York State Agricultural Experiment Station and released in 1946, this vigorous, self-pollinating vine is a cross of Ontario and Sultanina (Thompson Seedless) . It produces large, tapered clusters of small to medium fruit with a pleasantly tangy, sweet flavor and a crisp, meaty texture, making it excellent for fresh eating, juicing, and raisins . As one of the earliest seedless grapes to mature, it is ideally suited for gardeners in cooler climates with shorter growing seasons . Its lush, deciduous foliage also makes it a fast-growing and effective choice for quickly covering arbors, pergolas, and trellises, providing both a fruitful harvest and a beautiful, functional privacy screen.

Knowing how we measure the size?

When browsing our plants, you may notice size terms such as Gallon, Multi, or Stand. These describe how a plant is grown, containerized, or structured at the time of sale — not just its height. Understanding these terms will help you choose the right plant for your space and expectations.

🌱 Gallon Size (Container Size)

Gallon refers to the size of the nursery container the plant is currently growing in (e.g. 1 Gallon, 5 Gallon, 15 Gallon).

A larger gallon size generally means:
- A more established root system
- A sturdier plant
- Faster visual impact after planting
Example:
- 5 Gallon: Ideal for residential gardens, easy to handle, good balance of value and maturity
- 15 Gallon: More mature, provides quicker results in the landscape

Note: Gallon size does not guarantee a specific height, as growth varies by species.

🌳 Multi (Multi-Trunk / Multi-Branch Form)

Multi indicates the plant has multiple trunks or main stems growing from the base.

Commonly used for:
- Ornamental trees
- Feature plants
- Japanese maples, olives, crepe myrtles, etc.
Why choose Multi:
- Fuller, more sculptural appearance
- Strong visual presence even at younger ages
- Popular for design-focused landscapes

🌲 Stand (Single-Trunk / Standard Form)

Stand (short for Standard) refers to a single, dominant trunk with a raised or naturally formed canopy.

Commonly used for:
- Shade trees
- Street trees
- Orchard and structural plantings
Why choose Stand:
- Clean, classic tree form
- Easier clearance for walkways and lawns
- Preferred for long-term structure and uniformity

🌿 Choosing the Right Size

If you want instant impact → larger Gallon, Multi form
If you want long-term structure → Stand form
If you want flexibility and value → mid-size Gallon containers

If you’re unsure which size or form fits your project, our team is happy to help you select the best option based on your space, timeline, and design goals.

Foliage & Flowers: Large, palmately lobed, mid-green leaves with serrated edges; turn yellow to brown in autumn before falling; inconspicuous, self-pollinating greenish-white flowers in spring .
Fruit: Small to medium, round, golden-green to amber berries in large, tapered clusters; seedless with crisp, meaty, sweet flesh and a pleasant tangy flavor .
Mature Height: 10-20 ft (as a climbing vine, requires support) .
Mature Spread: 5-15 ft (depends on pruning and training system).
Growth Rate: Fast (vigorous grower) .
Hardiness Zones: USDA 5-9 ; Sunset 1-7 .
Light Requirement: Full sun (essential for best fruiting).
Core Benefits: Very early ripening, seedless, sweet flavor, self-pollinating, vigorous growth, good for fresh eating and raisins.
Best Uses: Fresh eating (table grape), raisins, juicing; covering arbors, pergolas, and trellises for privacy or shade .

Q: When are Interlaken grapes ready to harvest?
A: 'Interlaken' is a very early ripening variety. The grapes are typically ready for harvest in mid-to-late summer, usually from late August into September, depending on your local climate . They ripen 2-3 weeks before the classic Concord grape .

Q: How cold hardy is this grape? Is it suitable for a short growing season?
A: Yes, it is well-regarded for its suitability in cooler climates with shorter growing seasons . It is generally considered hardy in USDA zones 5 through 9 . However, some sources note that while vigorous, its winter hardiness is moderate, and it may be less hardy than varieties like Himrod or Concord in extremely cold regions (below -10°F) . Good site selection and winter protection can help in marginal areas.

Q: How should I prune an Interlaken grape vine?
A: Prune during dormancy (December-March) . 'Interlaken' is best pruned using a cane pruning method . Select two healthy canes on each side of the trunk, prune off up to 90% of the previous year's growth, and shorten the retained fruiting canes to about 7-10 buds per cane . This technique ensures good fruit production.

Q: What are its main disease concerns?
A: While a vigorous grower, 'Interlaken' can be susceptible to common grape diseases. It is reported to have high susceptibility to black rot and powdery mildew, with moderate susceptibility to botrytis . Good air circulation, proper pruning, and planting in full sun are crucial preventative measures.