Quickest way to ruin your dahlia tubers when you dig them up is to leave them resting on concrete. Why? The concrete sucks moisture out of the tubers at an incredibly fast rate, which quickly dehydrates them. Once tubers have lost too much moisture they become either much harder to store successfully or (worse case) unable to grow again. The solution for this potential issue is simple though, just make sure there’s a barrier between the concrete and tuber clumps if you’re using a spot that has c