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At this point, store yourAt this point, store your dahlia tubers in a cool, dry place. We wouldn't use plastic. Put in a brown paper bag or layer in a cardboard box with newspaper. Sprinkle each tuber with some garden sulphur to eliminate any fungus or mold while they over winter. Plant in the spring after all danger of frost has passed and the soil temperature in the top 6 inches is at least 50 degrees or you risk decay and rot.

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