jbrother

I grow peonies, and they are pretty carefree plants. If you only planted them in the past couple of years, sometimes it takes peonies 2-3 years to settle in and get happy enough to bloom. That's the only way they are finicky. Otherwise, I would dig them up, mix some compost in the soil and add some time-release fertilizer for flowering plants like Osmokote, be sure the root ball is broken up enough that it will spread out, and then re-plant and let them be. I live in the south and plant in red/yellow clay soils and my peonies do fine. They like their soils a little on the acidic side, so that might be a thing to take a look at. Also, be sure that they are getting a good 4-5 hours of afternoon sun, the hotter the better, with good drainage. Attached are pictures of my favorite peonies.