What to check first
Confirm which geranium you have
The common bedding and patio geranium is different from the hardy perennial Geranium grown in garden borders. Use its label or identification before deciding to dig a border plant. Ivy and zonal Pelargonium also differ in habit, so select healthy material appropriate to your method. [3]
Check the available winter space
For continued growth, choose a bright window and moderate indoor temperatures. For bare-root dormancy, Illinois describes roughly 45–50°F, while Iowa gives 45–55°F. A warm dark cupboard meets neither plan: it can encourage weak growth without supplying useful light. [2] [1]
Inspect before bringing plants inside
Check leaves, stems and roots for pests and damaged material. Keep questionable plants apart while you assess them. Taking a small healthy cutting can reduce the space needed, but a cutting from an infested or declining plant does not automatically solve its problem. [3] [2]
Choose the next step for your plant
Keep a leafy plant in bright light
Pot it in a drained container, reduce excessive top growth if needed and place it near suitable light. Water when the surface becomes dry rather than keeping the mix continuously wet. Indoor winter growth is slower, so the old outdoor watering schedule is a poor guide. [1]
For dormant storage, inspect stems periodically
Shake soil gently from the roots and put one or two plants in a large paper bag, or hang them upside down in a cool, dark, dry location. Leaves dropping during dormancy can be normal. Check periodically for firm living stems rather than shriveling or decay. [2] [1]
What to avoid
- Do not expose the stored plants to freezing temperatures.
- Do not use a leafy plant’s watering routine for a dormant bare-root plant.
What to watch next
In late winter or spring, assess the surviving stems, pot viable plants and return them gradually to light and active watering. Allow time for renewed growth before outdoor planting. Acclimate them outdoors after local frost risk passes; a calendar date from Iowa is not a national planting instruction.
Common questions
Can I save just a few cuttings?
Yes. Iowa describes short healthy stem cuttings rooted in suitable moist medium. Allow several weeks for roots to form and inspect moisture carefully; rooting is not immediate, and wet stagnant conditions are unhelpful. [1]
Which method guarantees the same big plant next year?
None guarantees that result. Light, temperature, plant condition and storage care affect survival. Choose the method you can monitor reliably and expect to prune or rebuild growth in spring. [2] [1]
Sources and review
This guide was prepared with AI assistance and checked against the sources below. It has not been reviewed by a botanist. Conditions and plant responses vary; use the checks above to decide what applies. Read our editorial standards.
- Iowa State Extension: How can I overwinter geraniums indoors?
Growing plants, bare-root storage, cuttings and regional spring care.
- University of Illinois Extension: How to overwinter geraniums for next year’s garden
Distinguishing active and dormant storage, temperature, stem condition and renewal.
- Iowa State Extension: Growing annual geraniums
Pelargonium versus hardy geraniums, plant health and winter storage options.