Empty plot over the winter - to cover or not

That's it VC!!

I have approx 100 dahlia tubers. At the moment there are quite a few flowering. I'm not digging them up to plant something else.

They will slowly get dug up when the foliage is blackened completely by frost.
This will not be until late November at the latest.It will get weeded as I dig and sort out my dahlia tubers.

I will then cover over until March and put the tubers back in after I have split and labelled up.
There isn't anytime or work left in me to try to grow something in that space.