Peony's - need some help!

Hi everyone,
it is the first time im participating...i need some help about peony's... it is my favorite flower, and i would like to plant them in my garden, but im have no clue about the best time of the year to do it...
Can anyone please give some general details and advices? Im a newbie !!

 

Just don't plant them too deeply (the herbaceous types we are talking about). The top of the plant should be no more than an inch below the surface. They need cold ripening to form flower buds. Main reason for not flowering is that they have been planted too deeply or mulched too heavily.
Tree paeonies are different, they should be treated like any other shrub.