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Out of Season Thornless Boysenberry

Thornless Boysenberry

Huge Berries with Sweet-Tart Flavor

A sweet treat in midsummer! The very large, almost seedless, sweet, dark maroon-colored berries boast a sweet-tart flavor and are excellent in jams and jellies, wine, preserves and for fresh eating. Thornless boysenberry canes produce 4-6 quarts per plant at maturity. The trailing canes grow 4-6 ft. tall. Boysenberries are harvested when the fruits drop from the vine at the slightest touch. Boysenberries don't keep well—so the best way to enjoy them is to grow them yourself. For best results, plant boysenberries in well-drained, slightly acidic soil in full sun. Self-pollinating. No. 1, 1 yr. plants. Zones 5-10.



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Out Of Season

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  • Botanical Name: Rubus ursinus var. loganobaccus inermis 'Boysen'
  • Height: 6 - 8 feet
  • Spacing: 3 - 6 feet.
  • Depth: Soak roots 2 - 6 hours before planting; plant so stain on the trunk is at the same level as previously planted.
  • Spread: 3 - 6 feet
  • Light Required: Full sun
  • Pollinator: Self-pollinated
  • Yield: 4 - 6 quarts at maturity.
  • Color: White
  • Foliage: Green foliage.
  • Blooms: Mid to late Spring.
  • Fruit: Large, reddish-purple berry.
  • Zone: 5 - 10.
  • Form: Arching
  • Flower Form: Small flowers
  • Soil Requirements: Boysenberries prefer slightly acidic, well-drained soil. Mulch well to ensure the root system remains moist during the growing season.
  • Growth Rate: Slow growth rate while establishing.
  • Pruning: Prune in winter to remove all canes that have fruited and all damaged and weak canes. Remove canes to the base, as close to the ground as possible. Tie up young trailing canes to a trellis system, they will fruit in the second year. Remove tips so canes do not become too long and encourage fruiting laterals.
  • Comments: Self-pollinating. Very large, almost seedless, juicy, sweet, dark maroon berries. Less vigorous with lower yields than regular boysenberries. More flavor than blackberries. Easy to transplant. Long ripening season, almost two months. Harvest when they drop from the vine at the slightest touch. Fruit does not keep well. Use immediately. Thornless canes. Average bearing age is two years. Average yield is 4 - 6 quarts. Produces fruit in mid-Summer.

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