How to Save Your Geraniums for Next Year and Grow Dozens of New Plants for Free
Your geraniums do not have to end up on the compost heap when summer finishes. With a little preparation before the first frost, you can keep your favorite plants through winter and use healthy stems to grow more for next year.
The familiar geraniums grown in patio pots, hanging baskets, and window boxes are usually pelargoniums—tender perennials often treated as annuals. They can live beyond one growing season when protected from freezing weather.
You can overwinter geraniums as potted plants, store suitable mature plants bare-root, or take cuttings and keep the young plants indoors. Taking cuttings while also saving a few healthy parent plants gives you more than one chance of success. Yard and Garden
Growing dozens is possible if you have enough healthy shoots, space, and time. It is not guaranteed from a single small plant, and although the cuttings themselves cost nothing, you may need potting mix and containers.
First, Make Sure You Have the Right Geranium
This guide is for tender Pelargonium, including the common zonal geraniums with rounded leaves and colorful flower clusters.
It is not a winter-storage guide for hardy cranesbill geraniums, which belong to the genus Geranium. Those are different plants and many can remain outdoors through winter in suitable climates. Illinois
If you are unsure, check the plant label before digging anything up. The word “geranium” alone can refer to either group.
Bring Geraniums Under Cover Before the First Frost
Watch your local overnight forecast rather than waiting for a particular date.
Move potted plants into protection and lift plants from beds before frost arrives. If you want cuttings, take them while stems are healthy and undamaged.
Late summer is an excellent time to start, but healthy pelargoniums can also provide cuttings in autumn. Later cuttings need a suitable indoor environment because declining light and temperature can slow establishment. rhs.org.uk
Before bringing plants inside:
- Inspect leaves, stems, and the undersides of foliage.
- Remove dead flowers and fallen debris.
- Check for insects and suspicious discoloration.
- Label varieties or flower colors you want to keep.
Choose your strongest plants. Avoid propagating from plants with unexplained distorted growth or persistent disease symptoms. Pelargonium viruses can pass into the next generation through cuttings. RHS Advice
Method 1: Keep Geraniums Growing in Pots
Keeping plants in containers is convenient when you have a bright window, conservatory, or suitable grow lights.
Plants already growing in pots can remain in them if the containers drain properly. For plants growing in the ground, lift the root ball carefully and transfer it into an appropriately sized pot with drainage holes.
If space is limited, shorten long stems by roughly one-third to one-half. Save suitable healthy tips for cuttings before trimming the rest.
Place the plants in strong light. Cool indoor conditions around 65–70°F (18–21°C) during the day, with slightly cooler nights, are suitable for maintaining them as houseplants.
Water when the growing medium has dried sufficiently, then allow excess water to drain. Warm rooms combined with weak light can produce long, spindly stems. Yard and Garden
Your winter goal does not need to be constant flowering. Keeping the plant healthy and manageable is enough.
Do not continue a heavy summer feeding routine when growth slows. Match feeding and watering to the amount of active growth.
Method 2: Store Suitable Plants Bare-Root
Bare-root storage saves space, but it is less forgiving than keeping plants in pots.
It works best with sturdy, mature plants. The RHS describes it as the least reliable overwintering option and recommends it only for varieties with tough, woody stems. Take backup cuttings if the plant is particularly valuable to you. rhs.org.uk
To prepare plants:
- Lift them before frost.
- Gently shake excess soil from the roots.
- Allow wet surfaces to dry before packing.
- Place plants loosely in large paper bags.
- Store them somewhere cool, dry, and frost-free.
Iowa State recommends a storage temperature of 45–55°F (7–13°C). Leaves may fall and shoot tips may die back during storage; surviving stems should retain firm, living tissue. Yard and Garden
A garage is suitable only if it stays within an appropriate temperature range. A space that freezes is not safe storage.
Inspect plants about monthly. Remove fallen debris and watch for rot or excessive shriveling. Extension guidance describes periodically soaking the roots for one to two hours to prevent excessive drying; let surfaces dry before returning plants to storage. Do not leave them enclosed while wet. Yard and Garden
Method 3: Take Cuttings to Make New Geranium Plants
Cuttings are especially useful when large parent plants would take up too much indoor space.
You will need:
- Healthy parent plants.
- Clean, sharp scissors or a knife.
- Small pots or propagation cells with drainage.
- Fresh, free-draining propagation mix.
- Labels.
- Rooting hormone, if you choose to use it.
Prepare the containers first so cut stems do not sit around drying out while you search for supplies.
How to Take Geranium Cuttings Step by Step
1. Select Healthy Shoot Tips
Choose firm, healthy tips rather than very old, woody stems or weak, damaged growth.
Cuttings approximately 3–4 inches (8–10 cm) long are suitable. Use a clean blade so you cut the stem without crushing it. Yard and Garden
2. Remove Flowers and Lower Leaves
Remove flower stalks and buds, then remove leaves from the lower portion of the cutting. Leave a few healthy leaves at the top.
Prepare the base just below a node—the point where a leaf joins the stem. Removing flowers reduces competing demands while the cutting forms roots. UGA Cooperative Extension
3. Insert the Cutting Into Propagation Mix
Use a fresh medium that holds some moisture while allowing air around the developing roots.
A small pot or cell is easier to manage than a large container filled with wet mix. Insert the cutting so a lower node is in the medium and the remaining leaves stay above it. Gently firm the mix to support the stem.
University of Minnesota Extension emphasizes positioning a node in the rooting medium when propagating geraniums. UMN Extension
If using rooting hormone, follow its label directions. Avoid adding extra powder or fertilizer in the hope of speeding things up.
4. Water and Provide Bright, Indirect Light
Water the medium and let it drain. Keep it lightly moist during rooting, without leaving it saturated or standing in water.
Position cuttings in bright, indirect light. Avoid strong direct sun that could overheat or wilt them before roots develop.
A clear cover can help limit moisture loss, but it requires monitoring and ventilation. Do not let condensation and stagnant air create persistently wet foliage. Illinois Extension advises watching for mold when using a plastic cover. Illinois
5. Give Roots Time to Develop
Expect rooting to take several weeks—often around four to eight weeks, depending on conditions.
Do not repeatedly pull cuttings out to inspect them. Look for developing roots at drainage holes or gently check whether a root system holds the medium together before transplanting.
Once established, move each cutting into a small individual pot and continue growing it in good light. Yard and Garden
How to Build Up Dozens of Plants
The most practical approach is to increase your collection in stages.
Take a manageable batch of autumn cuttings and keep a few healthy parent plants. When strong growth resumes in spring, suitable new shoots may provide another batch.
For example, six parent plants providing four cuttings each would give you 24 cuttings. That is an illustration, not a recommended harvest from every plant: a small or weak plant may supply far fewer.
Allow for losses. Some cuttings may fail, and rooted plants still need light, space, and care through winter.
Keep a simple record of:
- The parent variety.
- The date each batch was taken.
- How many cuttings rooted.
- Which plants performed best.
This helps you focus future propagation on the varieties that suit your conditions.
Care for Young Geraniums Through Winter
Place rooted young plants in a bright, frost-free location with room between pots.
Check moisture regularly, but water according to need. Small pots can dry quickly, while cool conditions can keep them wet longer than expected.
Remove fallen leaves and any material beginning to rot. Avoid crowding plants together simply to fit more onto a windowsill.
Do not rush to move a small rooted cutting into a large pot. Increase container size as its roots develop.
When active growth resumes, pinching shoot tips can encourage branching. Wait until young plants are established and growing strongly rather than repeatedly trimming struggling cuttings. rhs.org.uk
Wake Stored Geraniums Up Before Spring Planting
Begin preparing dormant plants several weeks before your expected outdoor planting date.
Remove them from storage and inspect the stems. Cut away dead, shriveled material, retaining firm living tissue. Pot surviving plants into fresh growing medium, water, and place them in bright light.
Iowa State describes restarting stored plants in March for its climate, but your own timing should follow local conditions. Yard and Garden
Wait until frost risk has passed before leaving plants outdoors permanently. Gradually introduce outdoor conditions over roughly one to two weeks, beginning in a sheltered position and increasing exposure.
Common Mistakes That Can Ruin Overwintering
Waiting until after frost. Damaged stems make poor starting material for storage or propagation.
Keeping leafy plants in a dark room. Plants maintained in growth need light; bare-root storage is a separate method.
Overwatering cool plants. Reduced winter growth usually means less frequent watering.
Storing wet plants in sealed plastic. Trapped moisture encourages decay.
Taking cuttings from unhealthy plants. Propagation can carry existing problems into the new plants.
Expecting every cutting to succeed. Start with healthy material and leave room for a few losses.
Frequently Asked Questions
Can geraniums survive winter indoors?
Yes. Tender pelargoniums can be maintained as potted plants, overwintered as rooted cuttings, or stored bare-root under suitable conditions.
Do I need a greenhouse?
No. A sufficiently bright windowsill or grow-light setup can work for potted plants and cuttings. Bare-root storage requires a suitable cool, frost-free space.
Is October too late to take geranium cuttings?
Not necessarily. Healthy shoots can still be used before frost, but late-summer cuttings usually have more time to establish. Autumn cuttings need adequate light and warmth indoors.
Should I cut geraniums back before bringing them inside?
You can shorten oversized plants to make them easier to manage. Take useful cuttings first, then shape the parent plant. Plants kept actively growing may also need pruning in spring.
How long do geranium cuttings take to root?
Often four to eight weeks. Temperature, light, cutting quality, and moisture conditions influence the timing.
Can I leave geraniums outside under a cover?
A cover may offer limited protection during a brief cold spell, but it is not dependable winter protection where freezing weather occurs. Move tender pelargoniums into a reliably frost-free space.
Will cuttings produce the same flower color?
Cuttings generally preserve the parent plant’s characteristics, making them useful for keeping a favorite variety. Plants grown from saved hybrid seed may differ.
Can one geranium really produce dozens of new plants?
A large, healthy plant may provide many cuttings over successive periods of growth. A small plant should not be stripped to meet a target. Building numbers gradually is more realistic.
