After planting Peony roots, how long before I see signs of life?

http://www.gardeners.com/how-to/peony-care/8106.html

They like full sun and good drainage

These guys have some really good tips for peony planting. Check it out- https://www.almanac.com/plant/peonies

Don't plant them deep. The rhizomes need to show.

Mine took a couple of years to bloom, especially tree peonies, be patient.

Peonies are my favorite. I have always planted from bare root, because the plant do not like to be transplanted, but it takes time. I usually see growth the next year, but not much. It can take up to three years before seeing a first bloom. But the plants are much hardier if grown this way. I have transplanted also with success, but it put a lot of stress on the adult plant and a lot of watering to help make it through the transition. Good luck.

Peonies, given full sun and decent drainage, will burst in bloom in year 3. They are the epitome of the old saying about 3yrs before hardiness and ful bloom. Yr1=sleeping, Yr2=crawling, Yr3=running! Like atoddler in development. The good news is that once established, they almost thrive on neglect! I give them a fertilizer, usually Weed and Feed, in the early spring then ignore them till the leaves are dead brown then I cut them. The comment about the tubular roots need to show is right on.