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Mars Seedless Grape Vine

Vitis labrusca 'Mars'

  • Mars Grapes Deliver Concord-Like Flavor Without the Seeds for Hassle-Free Snacking
  • Thrives in Zones 5-8
  • Native, Pollinator-Friendly Shrub
  • Showy White Blooms From Late Spring to Early Summer
  • Stunning Yellow Fall Foliage
Regular price $3348
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Plant Size

Planting & Care

Where to Plant

  • Sunlight: Mars Grapes require full sun, meaning at least 8 hours of direct light daily, to develop high sugar content and deep blue color. While they can grow in partial shade, you will face increased disease pressure and significantly smaller, more acidic fruit clusters.
  • Soil: These vines prefer deep, well drained loamy soil with a pH between 5.5 and 6.5. If you have heavy clay, plant in a raised mound to ensure water drains away from the roots, as "wet feet" will quickly lead to root rot.

Watering Requirements

During the first two years of establishment, provide 1 inch of water per week to help the deep root system take hold. Once mature, Mars is remarkably drought tolerant, but inconsistent moisture during fruit swell can cause the grapes to crack or remain small. Aim for deep soakings at the base of the plant rather than frequent light sprinkles to encourage roots to grow downward.

Pruning Tips

This variety produces fruit on new growth coming from one year old wood, so dormant pruning in late winter is essential. Use the "Four Arm Kniffin" system or a similar trellis method to remove up to 90 percent of the previous year's growth, leaving only a few select "fruiting canes" with about 10 buds each. Thinning the vine like this ensures the plant puts its energy into high quality fruit rather than a massive tangle of unproductive leaves.

Fertilizer Needs

Apply a balanced 10-10-10 fertilizer in early spring just as the buds begin to swell to support vigorous new growth. Avoid high nitrogen fertilizers after midsummer, as this encourages soft, green growth that will not harden off before winter, making the vine vulnerable to freeze damage. If your vine is growing more than several feet per year, skip the fertilizer entirely to prevent "all leaves and no grapes" syndrome.

Delivery and Shipping

Shipping Rates

Ships in 7-10 business days • Tracking provided • Weather protected

Under $50 $9.99
$50 - $99.99 $14.99
$100 - $149.99 $16.99
$150 - $198.99 $24.99
$199+ FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Specifications

Plant specifications
Plant Characteristics Cold hardy, Low Maintenance, Fast-growing, Edible, Seedless, Self-pollinating, Ornamental Berries/Fruit, Disease resistant, Drought resistant, Heat Tolerant, Container Friendly, Non-invasive
Sunlight Full sun
Height 12-20 ft
Width 4-6 ft
Watering Needs Moderate
Growth Rate Moderate
Plant Life Cycle Perennial
Blooms In Spring, Summer
Flower Color White
Fragrant Yes
Native Yes
Suitable Space Outdoors
Plant Name Grape vine
Botanical Name Vitis labrusca 'Mars'
Species labrusca
Cultivar Mars
Class Magnoliopsida
Does Not Ship To AK, HI, ID, MT, OR, PR, WA

Frequently Asked Questions

What USDA hardiness zones is the Mars Seedless Grape Vine suitable for?

  • The Mars Seedless Grape Vine is cold-hardy and suitable for USDA zones 5-8. This vigorous grower tolerates harsh winters while producing abundant clusters of sweet, blue grapes. Plant in full sun with well-draining soil for best results.

What is the mature size of the Mars Seedless Grape Vine at full growth?

  • Mars Seedless Grape Vines are vigorous climbers that can reach 15-20 feet at maturity with proper support. These fast-growing vines spread 6-8 feet wide and begin bearing fruit within 2-3 years. Train them on sturdy trellises or arbors to support their abundant grape clusters, available at naturehills.com.

Is the Mars Seedless Grape Vine self-pollinating, or do I need multiple plants?

  • Mars Seedless Grape Vines are self-pollinating and do not require a second variety for fruit production. However, planting multiple grape varieties can extend your harvest season and provide backup pollination for even better yields.

How much sun exposure does the Mars Seedless Grape Vine require?

  • The Mars Seedless Grape Vine requires full sun exposure for optimal grape ripening and high yields. Plant it along southern slopes or on the south sides of buildings to ensure it receives maximum sunlight throughout the growing season.

How do I prune and train a Mars Seedless Grape Vine for best fruit production?

  • Train Mars Grape vines on sturdy trellises or arbors in full sun for optimal fruit production. Prune in late winter while dormant, removing old wood and keeping 2-3 main canes with 8-10 buds each. This vigorous grower benefits from annual pruning to manage growth and concentrate energy into fruit clusters, available at naturehills.com.

What are the watering requirements for a newly planted Mars Seedless Grape Vine?

  • Newly planted Mars Seedless Grape Vines need consistent moisture throughout their first growing season to establish strong roots. Water deeply 1-2 times per week rather than frequent shallow watering. Focus extra attention during dry spells when the soil feels dry 2 inches down.

Does the Mars Seedless Grape Vine ship bare root or in a pot, and when is it available?

  • Mars Seedless Grape Vines typically ship as bare root plants during the dormant season (late fall through early spring) or as potted plants during the growing season. Bare root shipping occurs when plants are dormant for best establishment success. Check the product page for current availability and shipping method, as this varies by season and inventory.

Is the Mars Seedless Grape Vine truly seedless, and what does the fruit taste like?

  • Yes, Mars Grapes are truly seedless with a sweet, robust flavor similar to Concord grapes. These medium-sized, slip-skin blue berries grow in well-filled clusters and are perfect for fresh eating or making jellies. Plant in full sun with well-draining soil for best fruit production and sweetness.

How disease-resistant is the Mars Seedless Grape Vine, especially to mildew and rot?

  • The Mars Grape shows high resistance to black rot and mildew, two of the most problematic grape diseases. This natural disease resistance makes it an excellent low-maintenance choice for home gardeners. Provide good air circulation and avoid overhead watering to maximize its built-in disease tolerance.