Tree peonies need iron, which is used by the plant to improve general vigor and depth of flower color, so it would be helpful to apply some iron sulphate, commonly available in small bags at garden centers.
(Tree peonies; need; iron, which is used by the plant to improve general vigor and depth of flower color,) (iron; is used; by the plant; to improve general vigor and depth of flower color, so it would be helpful to apply some iron sulphate, commonly available in small bags at garden centers)
Tree peonies iron
need is used
iron, which is used by the plant to improve general vigor and depth of flower color,
by the plant to improve general vigor and depth of flower color, so it would be helpful to apply some iron sulphate, commonly available in small bags at garden centers