Best Methods for Overwintering Geraniums Indoors

To keep geraniums over winter:

1. Bring pots indoors before frost. Place in a sunny window (south, east, or west).
2. Water by weight—pot should feel heavy after watering; wait until light (every 5–14 days). Avoid constant moisture to prevent rot.
3. Remove dead flowers and leaves as they appear. Stop fertilizing in September.
4. In spring, when nights stay above 45°F, move outdoors gradually. Repot with fresh mix if desired. Resume fertilizing.

Alternative method: bare-root storage (shake off soil, hang upside down in a cool, dark place above 45°F, repot in spring). The intact-plant method is more reliable. If it fails, buy new in spring and try again.