The four Ice Saints named Bonifatius, Pankratius, Servatius and Sophie are calendrical from May 12th to 15th. Flowers that have overwintered in the cellar or greenhouse should only be brought outside after this time.
Because there is still a risk of night frost up to these days. After that it can still happen, but in most German regions this is no longer the case. So the flowers can go out. But don't just put it in the garden or on the terrace.
Avoid blazing sun
There are also a few things that need to be taken into account so that the plants can be moved. They should not be placed in full sun immediately, but slowly acclimated to the sun in the shade or semi-shade.
Don't forget to fertilize
You also have to fertilize them vigorously and finally cut off the dead branches and branches or stems that are too thin or too long, are capped. In this way, the flowers survive the move perfectly and delight the gardener with new blooms.