Hi Cheryl,

Thank you for contacting UNH Cooperative Extension with your questions about your dahlias.  I have included a link to a fact sheet that discusses when to dig up dahlias and how to store them over winter.  You can use a felt tip pen to write directly on the tubers to label them.

https://extension.unh.edu/blog/2019/10/when-should-i-dig-dahlia-tubers-how-should-i-store-them

I could not find a definitive answer concerning your bulbs that were not planted but have sprouted. Since your tubers have sprouted, they have already lost some of their energy.  However, you may want to store them, and plant them next spring.  They may not grow or may only produce foliage and no flowers.

I have included a link to the most recent (2023) USDA plant hardiness zone map where you can find your zone by using your zip code.  The zones have changed slightly, due to climate change, since the last update in 2012.

https://planthardiness.ars.usda.gov/