GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on August 28, 2023
Is this for winter storage? Wait until the foliage has turned yellow before digging them up. Here is how to store them:
https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/storing-dahlia-tubers.htm
If it is for spring planting, wait till all chance of frost has passed to move the container outside.
https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/grow-dahlias-in-containers.htm
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