I'm looking to overwinter my tuberous begonia for the first time this year. I learned online how exactly to go about the process of overwintering and you're supposed to store the tuber in peat moss or sawdust. I don't want to use coconut coir and I don't have a cat to use kitty litter.
I want to keep my tuber dry and cool but substitute the peat moss with a home made (dorm made*) alternative.
I read that a mixture of egg shells, coffee grounds and shredded newspaper would be effective but only on one website, and I don't have access to egg shells either.
What about coffee grounds and shredded newspaper alone? Why can't I just use shredded newspaper only, surely it's dry...