Distinguishing all kinds of peonies

I like growing as many kinds of peonies as possible so I've grown them from seed as well as purchased many plants to get together a nice collection. I'm not even too concerned about the names anymore, but I am able to tell their age, and whether they are herbaceous, itoh or tree peonies just by their appearance. I'm only selecting no more than 7 of each type as it would be too long of a blog post to post hundreds of photos.

Here are some 1st year tree peonies which are just starting to come out this year. They usually make no more than 1-3 leaves on the 1st year while there has been a case where I've gotten 6 leaves before. These have just started coming out after a good week of rain and temperatures slightly above freezing.

Taking down the greenhouse for spring 2013

This year, spring came kind of late, but this weekend, it is finally in the 60s with a forecast that looks OK. I decided to take off the greenhouse that has been up since 23 September of last year. These plants have been under a greenhouse for 6 1/2 months, but they are still looking pretty good. I keep mostly bamboos in this thing.

It took about an hour to move all the stuff out and clean up the area.