Blooms fail for several reasons: a hard freeze in spring, excessive share, competition from the roots of other plants/trees, low fertility of the soil, drought stress during bud development in the previous year, poor drainage or wet conditions. Botrytis blight of the flower occurs during cool, rainy spring weather; buds blacken and die (doesn’t sound like your situation). Planting too deeply and overcrowding can also hamper bloom. And then there’s pH; peonies like a slightly acidic to neutral soil, however, they do not do well in extremely acid soil. Here’s some help with that: /blog/gardening/garden-journal/soil-testing-better-garden
Blooms fail for several reasons: a hard freeze in spring, excessive share, competition from the roots of other plants/trees, low fertility of the soil, drought stress during bud development in the previous year, poor drainage or wet conditions. Botrytis blight of the flower occurs during cool, rainy spring weather; buds blacken and die (doesn’t sound like your situation). Planting too deeply and overcrowding can also hamper bloom. And then there’s pH; peonies like a slightly acidic to neutral soil, however, they do not do well in extremely acid soil. Here’s some help with that: /blog/gardening/garden-journal/soil-testing-better-garden
We hope this helps!