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We've had dahlia tubers lastWe've had dahlia tubers last a couple of years. There is no general rule. If they are stored in a cool, dark place and packed in sawdust or something that helps retain moisture, they might be OK. If they're wrinkled, they'll probably still grow. You just don't want them to be rotted! Try it out and see how it goes--and let us know!

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?