Welcome to GOY Von. You can plant them out where you want them to grow if all fear of frost where you live has passed and put them UNDER the soil or compost. It is the leaves and stems that are so vulnerable with begonias as they are very full of water.

thank you had to replant them

Hi again Von. If they are planted out and made shoots, pop a bucket over them if frost warning, or in a container, pop into garden shed or cover up if too heavy to move.

they are in the greenhouse not any shoots as yet thanks dorjac