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How to Propagate Winterberry

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How to Propagate Winterberry

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Overview

The winterberry is a deciduous holly shrub about 12 feet high. The trunk is low to the ground with many erect branches that spread to a width of 8 to 12 feet. Propagate to create more winterberry plants by taking softwood stem sections in late spring through early summer. Softwood stem sections are delicate, but produce roots quickly. Grow winterberry cuttings indoors through one winter season to increase the hardiness before transplanting outdoors.

Step 1

Cut 8-inch softwood stem sections from new growth on the winterberry shrub with a clean, sharp knife. Softwood stems on a winterberry shrub are immature sections that snap when bent in half. Place the stems in a moist piece of paper towel to prevent moisture loss.

Step 2

Fill a stem propagation tray with a mixture of one part peat moss, one part course sand and one part perlite. Dampen the mixture with water to make it moist but not sopping.

Step 3

Cut all leaves off the bottom one-half of the winterberry stem with a sharp knife. Apply rooting hormone to the bottom cut end of the stem. Stick the stem into the propagation tray so the bottom half is covered with soil.

Step 4

Mist the winterberry stems and propagation soil with water. Cover the tray and stems with a plastic bag to make a greenhouse environment for root production. Close the bag with a rubber band or clips.

Step 5

Place the covered propagation tray in a warm area that receives warm, filtered light. Open the bag 1 to 2 times a day to provide air circulation and mist the cuttings with water. Monitor the moisture content in the propagation medium to prevent it from becoming saturated.

Step 6

Pull on the winterberry stems after three weeks in the propagation environment. Resistance indicates there is root growth. Verify the length of the roots by gently removing the soil.

Step 7

Transplant the winterberry stems to 4-inch containers when the roots are one-inch or longer. Fill the containers with a high-quality potting soil and plant the stems at the same depth they were growing in the propagation tray.

Things You'll Need

  • Sharp knife
  • Paper towel
  • Peat moss
  • Course sand
  • Perlite
  • Propagation tray
  • Water
  • Rooting hormone
  • Water mister
  • Plastic bag
  • Rubber band
  • 4-inch growing container
  • Potting soil

References

  • Ohio State University: Ilex verticillata
  • FloriData: Ilex verticillata
  • North Carolina State University: Plant Propagation by Stem Cuttings
Keywords: propagate winterberry shrub, winterberry stem cuttings, root winterberry cuttings

About this Author

Jennifer Loucks has over 10 years of experience as a former technical writer for a software development company in Wisconsin. Her writing experience includes creating software documentation and help documents for clients and staff along with training curriculum. Loucks holds a Bachelor of Science major from the University of Wisconsin - River Falls specializing in animal science and business.

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