Don’t Ignore Your Geraniums in November: 5 Essential Things to Do Before Winter Arrives
Your geraniums may still have colorful flowers in November, but a mild afternoon can quickly turn into a frosty night. A little preparation now can help you preserve your favorite plants for next year.
The priorities are straightforward: protect them from frost, check their health, tidy them appropriately, reduce watering, and give them suitable winter conditions.
This guide covers tender Pelargoniums—the plants commonly sold as bedding or annual geraniums. Hardy cranesbill geraniums belong to a different group and often remain outdoors through winter.
Pelargoniums need a frost-free winter location. If frost arrives before November where you live, complete these jobs earlier rather than waiting for the calendar. www.rhs.org.uk
1. Move Your Geraniums to Shelter Before Frost
The most urgent task is protecting your plants before freezing weather damages them.
Move containers indoors or into a genuinely frost-free greenhouse, conservatory, or enclosed porch. Lift garden-grown plants carefully and pot them into containers with drainage holes.
Do not assume a garage or shed stays above freezing. Check its overnight temperature with a minimum–maximum thermometer.
For plants that will remain leafy and growing, choose a sunny window or suitable grow lights. Iowa State University Extension recommends daytime temperatures around 65–70°F, or 18–21°C, with slightly cooler nights for geraniums maintained as indoor plants. yardandgarden.extension.iastate.edu
Keep leaves away from icy glass and avoid positioning pots directly beside radiators or heating vents.
If your plants are already indoors, use this step to check whether their location provides enough light and protection from temperature extremes.
2. Inspect for Pests and Remove Unhealthy Material
Before placing outdoor plants among your houseplants, inspect them carefully.
Look under leaves, around growing tips, and along stem joints. Check for insects, sticky deposits, webbing, unusual spotting, and soft or darkened stems.
Remove dead leaves and spent flower stalks, including debris sitting on the potting mix. Clean the outside of containers and their saucers.
Illinois Extension emphasizes checking for pests and diseases before overwintering because problems can spread to other indoor plants. extension.illinois.edu
Keep newly moved plants separate from your established indoor collection while you monitor them. If you find a problem, identify it before choosing a treatment.
A few yellow leaves do not automatically mean the plant is diseased. Examine the whole plant and check its moisture and light conditions before deciding what to do.
Avoid taking propagation material from plants with unexplained disease symptoms. Saving a favorite variety is worthwhile only if the replacement plants begin healthy.
3. Tidy or Prune According to Your Winter Plan
There is no single pruning rule that suits every overwintering method.
A plant you want to keep growing on a sunny windowsill needs different handling from one you intend to keep almost dormant in a cool space.
For plants staying leafy indoors: Remove dead or damaged growth and shorten awkward stems if necessary. You can leave more substantial shaping until spring.
For plants being kept cool and relatively inactive: Reducing the top growth can make storage easier and reduce the amount of foliage you need to maintain.
The RHS allows either autumn cutting back or spring pruning for container-grown Pelargoniums, depending on whether they will remain actively growing through winter. www.rhs.org.uk
Use clean, sharp tools and avoid tearing stems.
If space is limited, healthy stem tips can provide cuttings. Illinois Extension recommends sections around 3–4 inches, or 8–10 centimeters, with lower leaves removed and the bases inserted into a suitable rooting medium. Rooting may take approximately four to eight weeks. extension.illinois.edu
November cuttings need good indoor conditions. Do not expect frost-damaged stems to perform like healthy material taken earlier.
4. Reduce Watering and Match Feeding to Growth
A summer watering routine is usually unsuitable for winter.
Lower light, cooler temperatures, and reduced growth mean plants often use water more slowly. Check the potting mix before adding more.
For leafy indoor plants:
- Allow the surface of the mix to dry before watering.
- Water the root zone and let excess drain away.
- Empty saucers afterward.
- Adjust the interval to the plant’s actual drying rate.
For cool, heavily cut-back plants, water much more sparingly. The RHS notes that these plants require very little water until growth resumes. www.rhs.org.uk
Do not automatically water a yellowing plant. If its compost is already wet, adding more can make the underlying problem worse.
Feeding should also reflect growth. Plants resting through winter need no routine fertilizer. Those actively growing in strong light may need reduced feeding according to the product directions.
Fertilizer cannot compensate for an unsuitable dark location.
5. Set Up a Winter Check Routine
Once your geraniums are sheltered, continue checking them rather than leaving them untouched until spring.
For potted plants, inspect:
- Soil moisture.
- New pest activity.
- Fallen leaves and decaying material.
- Weak growth stretching toward the light.
- Overnight temperatures in the storage area.
Keep enough space between pots to inspect individual plants and avoid a crowded mass of damp foliage.
If you are using dormant bare-root storage, the requirements are different. Iowa State University Extension recommends removing soil and keeping plants in paper bags in a cool, dry location around 45–55°F, or 7–13°C. Leaves and some shoot tips may die back during storage. yardandgarden.extension.iastate.edu
This method is less reliable than keeping suitable plants in pots or preserving them as cuttings. It is best treated as an option for appropriate sturdy plants, not a universal solution. www.rhs.org.uk
Label stored plants with their colors or variety names. A quick photograph before flowers disappear can also help you plan next year’s containers.
Common November Geranium Mistakes
Waiting for a hard frost: Move plants before freezing conditions arrive.
Keeping leafy plants in darkness: Plants maintained in growth need adequate light.
Watering on a fixed weekly schedule: Check the potting mix instead.
Pruning every plant identically: Match pruning to your chosen overwintering method.
Feeding to fix weak growth: Improve light and growing conditions first.
Assuming shelter means frost protection: An unheated structure can still freeze.
Ignoring stored plants: Periodic checks help you notice drying, decay, or pest problems.
How to Restart Your Geraniums in Spring
As light improves, inspect plants and remove dead material. Shape surviving growth, repot where necessary, and gradually increase watering as new growth develops.
For bare-root stored plants, prune back to firm, living tissue before potting them up and moving them into bright light. Allow time for recovery before outdoor planting. yardandgarden.extension.iastate.edu
Wait until local frost risk has passed, then gradually acclimate plants to outdoor sun and wind.
Flowering depends on the variety, winter conditions, and how much pruning was needed. The goal is to return healthy plants to the garden, rather than force an exact flowering date.
Frequently Asked Questions
Is November Too Late to Save Geraniums?
Not necessarily. Healthy plants can still be moved indoors before damaging frost. In colder regions, protection may have been needed weeks earlier.
Should I Remove All the Flowers Before Winter?
Remove faded flowers and dead stalks. Healthy flowers can remain on plants maintained in good indoor growing conditions. Remove flowers and buds from stems you are preparing as cuttings.
Can Geraniums Stay in a Garage All Winter?
Only if the conditions suit your method. Leafy potted plants need light, while suitable dormant plants can tolerate darker storage. The garage must remain frost-free.
How Often Should I Water Geraniums in November?
There is no universal interval. Check the mix and adjust watering to light, temperature, pot size, and growth. Cool, resting plants need much less water.
Do Geraniums Need Fertilizer in Winter?
Dormant plants do not. Actively growing plants may need limited feeding, but only when light and other conditions support healthy growth.
Can I Save the Same Geranium for Several Years?
Yes. Pelargoniums are perennial plants and can live for multiple seasons under suitable conditions. Cuttings can also preserve a favorite variety as younger replacement plants.
Gardening Disclaimer
These recommendations apply to tender Pelargoniums, not all plants called geraniums. Winter care depends on variety, local temperatures, light, and plant health. Follow weather forecasts and actual growing conditions rather than the month alone.
