Tuberous Perennial Dahlia - Care Of Bulbs Over Winter - Knowledgebase Question

Albany, NY
Question by dial1222
October 16, 1999
When I received this plant as a gift, the instructions said to clean the bulbs in the Fall with a Clorox solution and store in a paper bag over the winter, then plant again in the Spring. Is this correct? It seems weird.

Answer from NGA
October 16, 1999


I would imagine the bleach (bleach and water solution) is intended to reduce the chance of mold and other nasties affecting the bulb over winter. If you do this, make sure the tubers are dry before you store them. Storing them in a paper bag or cardboard box plus possibly peat moss or wood shavings or even sand is fairly standard for dahlias -- it allows for some air circulation. You'll want to keep them in a cool location but do not allow them to freeze. Check them periodically to make sure they are not molding or shriveling, then replant in the spring.

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