Where to create garden blog

I want to create a separate garden blog for my own documentation purposes but also for my mother to be able to look at. Clearly I don't want her reading this journal.

I could create another journal on here.

I could go with one of the hosted blog sites.

I could set up blogging software on the domain&host that Ernie and I own, they provide Wordpress, B2evolution, Nucleus, Geeklog. About which I know absolutely nothing.

Any suggestions/experience would be highly appreciated.