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Blackberry ‘Triple Crown’ (Thornless)

Blackberry ‘Triple Crown’ produces large, flavorful black berries on a thornless, semi-erect bush. This plant has strong canes which do not require trellising. These delicious berries will produce over a 5-week period to be harvested and enjoyed. ‘Triple Crown’ produces high yields year after year. It is an excellent choice to extend the blackberry season for home gardeners.

‘Triple Crown’ was a joint release from the USDA-Beltsville and the Pacific West Agricultural Research Service. Early trials indicated that ‘Triple Crown’ would ripen earlier than ‘Chester’ and exhibit winter hardiness similar to ‘Chester.’

  • Non-GMO
  • Self-pollinating
  • Heat tolerant
  • High yields

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Plant Details +

Botanical Rubus fruticosus 'Triple Crown'
Common Name Blackberry 'Triple Crown'
Family Rosaceae
Height 3-5'
Spacing 3-5'
Hardiness Zones 5-9
Exposure Full sun
Foliage Green
Fruit Large, deep blue to black
Harvest Late Summer

Planting/Care Instructions +

Planting Instructions: May be planted in any well-drained soil. Dig a hole large enough to encompass the roots without bending or circling. Set the plant in place so the crown (part of the plant where the roots meet the stem) is about 1-2" below the soil surface. Cover with soil to the original soil surface and water thoroughly. Roots are shallow – don't cultivate more than an inch deep. Fertilize at planting and again in late spring. Choose a sunny site in your garden with good air circulation, water drainage, and a pH of 6.0-7.0. Keep roots moist until planting. Work plenty of organic matter into the soil and mulch to keep out weeds. Plant as soon as the soil has warmed. Trim canes to encourage new growth. Plants should be set out at least 2 feet apart in rows 7 feet apart. Trellising is beneficial for cane support. These summer-bearing berries produce fruit on second year canes (floricanes). In the fall of the 2nd year, prune spent canes at ground level and thin others to approximately 4 canes per foot of row. Cut off suckers which grow outside of rows. Trim remaining blackberry canes to 7 feet.

Pests or Diseases: 'Triple Crown' blackberry plants can experience anthracnose, botrytis and verticillium wilt. Cane borers and crown borers are potential insect pests.