[header] How to care for geraniums in winter [title] Prune back your geraniums to about 1/2 of their original height. [title] Use a trowel to carefully dig up each plant. [title] Put each geranium plant in a pot that is at least 6 to 8 " (15. 2 to 20. 3 cm) in diameter. 
[title] Set each pot in a sink and water them until they are thoroughly soaked, but not soggy. [title] Place your geranium pots in a sunny window.