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Dahlias tuber #948194

Asked November 06, 2026, 5:56 PM EST

When do you dig up tubers for dahlias

Allegan County Michigan

Expert Response

Hello Cindy,

Typically you harvest the tubers after the stalks die following a "killing frost." Once the stalks turn brown/black, you know the plant is no longer moving sugars to the tuber.

Here is an article about harvesting and storing dahlia tubers:

https://extension.psu.edu/dont-ditch-those-dahlias-easy-tips-for-winter-storage

Hope this helps.

Edward A. Replied November 07, 2026, 2:48 PM EST

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Dahlias tuber #948194

Expert Response

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