What depends the size of a peony flower?
The size and color of the peony flower are influenced by many, many variables.
Most important is the quality of the peony root. The bigger and more healthy the root, the more power the flower will have. Also the soil is important. Is the soil in which the peonies are being planted nutrient rich or poor? Heavy clay grounds, on which we grow our peonies, have way more power than a sandy soil. The climate in which the peony is grown is also of major importance.
In the last place a peony needs to be treated well. You got to have ‘green hands’. Give them water and nutrients at the appropriate moment and take all necessary precautions to avoid diseases.
This will give you the nicest peony flowers!