Overwintering Dahlias

Question

I have always overwintered Dahlia tubers in a frost free area in dry compost, watering only after they begin to sprout. The method worked until now. I have two tubers which have not sprouted yet. I have just watered them. If they now grow, would they have sufficient time to store energy for next year or are they a dead loss ? A retailer has told me that they should have been watered earlier to encourage growth. If this is correct, at what time of year should I begin watering ? With my thanks in advance,

Answer 1

At this point it would likely be a loss, unfortunately. This collection of articles will help you in the future:

https://www.gardeningknowhow.com/ornamental/bulbs/dahlia