Where does a blog fit into the life of a busy gardener?

I'm taking a big step here in starting a garden blog. The reason won't be at all apparent to readers, so let me explain. For over thirty years I've kept manuscript garden journals; in these my successes, failures, hopes and dreams for my garden are recorded. Will I have the energy to maintain both the journals and the blog? Will the blog eventually supplant the journals? Are blogs the new diaries?I can already see one potentially significant difference between my journals and a blog: my journals are full of rhetorical questions. I hope the topics I broach here will elicit lots of responses from readers. Let's see what happens over the next few weeks.