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How to Dig Cannas

Contributor
By Beth Anderle
eHow Contributing Writer
(0 Ratings)
Canna lily
Canna lily
Catherin Munro: Wikimedia

Canna lilies are summer-blooming plants that grow from a tuberous root called a rhizome. Cannas come in a wide range of colors and grow from 1 foot to 10 feet tall depending on the variety. While cannas can safely overwinter in hardiness zones 7 to 10, gardeners in zones 1 to 6 will need to dig up the rhizomes and store them until spring.

Difficulty: Moderate
Instructions

Things You'll Need:

  • Garden shears or scissors
  • Garden fork or trowel
  • Plastic bag with air holes
  • Sawdust, peat moss or other organic packing material

    Digging Up Cannas

  1. Step 1

    Dig up the canna rhizomes before the ground freezes. Freezing will cause them to rot.

  2. Step 2

    Cut the plant's foliage, leaving 3 or 4 inches. Discard the trimmed foliage to reduce chances of insect infestation.

  3. Step 3

    Using a garden fork or trowel, gently loosen the soil around the rhizomes.

  4. Step 4

    Insert the fork or trowel under each rhizome and gently lift until the long, tuberous root is exposed. Rhizomes can spread rapidly in one growing season, so be sure to excavate an area large enough to account for any new growth.

  5. Step 5

    Lift the root out of the ground and gently shake off any clumps of soil. Save any broken pieces of the rhizome--these pieces will also take root and grow.

  6. Step 6

    Brush or wash off any loose soil and inspect the rhizome for insect infestation or rot. Discard any rhizome that appears rotted or infested.

  7. Storing Cannas

  8. Step 1

    Let the roots dry for three days, especially if you have washed off the roots with water.

  9. Step 2

    Divide the clumps into three- to five-eye bulbs.

  10. Step 3

    Place the clumps in a plastic bag with several air holes. This will keep moisture from building up but prevent the rhizome from drying out.

  11. Step 4

    Add sawdust, dried peat moss or other clean, dry organic packing material to protect the root.

  12. Step 5

    Store the bag in a dark area between 45 and 60 degrees. This will prevent the rhizomes from freezing but will inhibit premature growth.

Tips & Warnings
  • If your canna rhizomes are getting too dry during winter storage, spritz them with a plant mister.
  • Do not allow the bulbs to dry out completely. According to Dustin and Nikki Snow, owners of Horn Canna Farm in Carnegie, Oklahoma, this is the main reason plants fail to grow the following year.
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eHow Article: How to Dig Cannas

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