The shape sounds normal, or as normal as peonies get. It’s not entirely clear what the “tube-like extension” is but if you’re getting green shoots you’re probably on your way. As far as which way is up, usually fresh growth in the form of whitish (and perhaps a red tone) appear on the tubers. These are the eyes that become the shoots—something like the eyes that appear on potatoes but much larger. (Perhaps they would have appeared if the tuber spent a little more time out of soil.) If you’re ever in a nursery, ask someone to point these out to you. For now though, sit back and watch the show!
The shape sounds normal, or as normal as peonies get. It’s not entirely clear what the “tube-like extension” is but if you’re getting green shoots you’re probably on your way. As far as which way is up, usually fresh growth in the form of whitish (and perhaps a red tone) appear on the tubers. These are the eyes that become the shoots—something like the eyes that appear on potatoes but much larger. (Perhaps they would have appeared if the tuber spent a little more time out of soil.) If you’re ever in a nursery, ask someone to point these out to you. For now though, sit back and watch the show!