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How to Dig, Divide, and Store Dahlia Tubers

Gary Junken

Dahlias have some of the most beautiful flowers of any garden plant available. They appear in every color of the rainbow but blue, and present over a dozen unique forms and variable sizes. Dahlias are also tender perennials that need protection from harsh winters and soil that is not well drained. In this video, Barbara Pierson of White Flower Farm in Litchfield, Connecticut, demonstrates the best way to dig, divide, and store your dahlia tubers for winter to ensure that you can enjoy their fabulous blooms year after year.



View Comments


  1. user-7007085 07/22/2014

    How do I treat fungal infections

    1. ngrrsn 10/30/2014

      I am a Dahlia beginner, but, according to Dahlia Barn, you can treat the plant (growing) with almost any fungicide -- a good one for preventive and organic minded is Neem oil every 7 to 10 days through and up to flowering. To treat the tubers IF you had fungus last summer, they recommend after dividing that you soak them for 15 minutes in a mixture of 1/2 cup bleach to 1 gal of water. Remove the tuber from the solution after 15 minutes and then let them dry as per this video instructions.

  2. ngrrsn 10/30/2014

    Wonderful video! Thanks! New to dahlias and I dug mine up...but what I found was that I had one medium tuber attached to the stem and about 4 or 5 tubers that were not attached...they were separated from the stem. If I understood your video, does this mean that those tubers that are not attached probably have no eye and will not grow if planted? Correct?

  3. pamgallikrumsey 09/22/2017

    This has been t he first year I have planted dahlias, and want more next year. My question is if it would be a good idea to dust the tubers with an anti-fungal before storing for the winter.

  4. User avater
    HalArmstrong 01/18/2019

    Thank you for sharing this video!

  5. User avater
    RaymondPHouse 01/29/2019

    Nice video. Thanks for sharing this post about Dahlia Tubers!

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