Overwintering Geraniums in Ohio Garage: Temperature Critical

Minimum 45°F Required for Garage Storage

Geraniums need minimum 45°F (7°C) to survive winter dormancy. If your Ohio garage drops to -10°F, it's unsuitable unless heated. Water sparingly—just enough to keep soil barely damp.

Indoor Alternative

Last year's leaf drop in a sunny bathroom suggests overheating. A cool, bright room without direct sun works better. Have a backup indoor location for extreme cold snaps.

Monitoring Essentials

• Thermometer in garage
• Soil moisture checks weekly
• Backup indoor space for sub-45°F periods

Consistent cool temperatures are the key to success.