How to Grow Blackberries With Root Cuttings

Written by si kingston
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Blackberries are native to Louisiana and are well-suited to grow in a humid climate. However, blackberries will grow successfully in other climates, but will freeze in -12.2 degrees Celsius or less. There are many ways to propagate blackberries. Tip layering, seeds and root cuttings are all common ways to grow blackberry bushes. Growing blackberries from a successful root system helps ensure that you have a successful, fruiting plant.

Skill level:
Moderately Easy

Things you need

  • Shears
  • Well-rotted compost or peat moss
  • Medium with plastic top or cling film
  • Spade or rototiller
  • PH test kit

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  1. 1

    Find blackberry roots about the size of a pencil in January or February. Cut the roots into 4- to 6-inch pieces.

  2. 2

    Mix a shovel full of well-rotted compost or peat moss with soil and place the soil in a pot or other medium. You can purchase a plastic medium with a top at a garden supply store, or use a plant pot.

  3. 3

    Place the rooting cutting 2 to 3 inches deep in the soil, 1 to 2 feet apart in rows. The pH of the soil must be between 5 and 7.

  4. 4

    Cover the pot with cling film. If you are using a plastic medium, place the plastic lid on top so it is secure.

  5. 5

    Keep the soil in the pot moist but not soggy. You must figure out a watering schedule for the cuttings and stick to it. The cuttings will most likely need to be watered twice a week, but this can vary depending upon how much sunlight the plant receives and the soil. Check your cutting once a day for the first week to determine how often it will need to be watered.

  6. 6

    Find a permanent location for the blackberry cutting once the cutting has formed roots in March to April. Place the blackberry cutting in full sun to partial shade. Make sure the soil has a pH of 5 to 7. To test the pH level, purchase a pH test kit at a local garden supply store. Place a soil sample in the test tube and apply the solution that comes with the kit. The solution and soil will turn a specific colour that indicates the pH level, compare that colour to the chart inside the kit.

  7. 7

    Apply 3 to 4 inches of well-rotted compost or peat moss over the soil. Use a spade or rototiller to mix the compost or peat moss into the ground.

  8. 8

    Pull the cutting and its roots, gently, from the pot or medium. Transfer the cutting to a permanent home in the yard. Space more than one cutting 2 to 3 feet apart.

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