Is Paeonia lactiflora beginning of spring suitable for transplanting?

Not suitable. Peony flowers are usually transplanted after autumn, and some fibrous roots can grow before winter, so they will bloom in the next spring. However, the soil temperature transplanted in spring is too low to take root, which seriously hurts vitality. Therefore, peony is planted in spring and will not open when it is old. In fact, this proverb is also exaggerated. It is true that flowers don't bloom that year or every other year, but they don't bloom all the time. As long as it is well cultivated, it will still bloom in a few years, but it is best to wait until autumn and September before transplanting, and it will bloom every year.