Geraniums (Pelargonium spp.) are ornamental plants highly appreciated for their abundant and colorful flowering, in addition to their resistance. However, during the winter they face their most delicate stage, since Cold and frost can compromise your healthTo preserve them and ensure they look their best again in spring, it's essential to follow a series of specific care guidelines tailored to this season.
Characteristics and varieties of geraniums
Geraniums, native to South Africa, are known for their adaptability, which has facilitated their expansion into gardens and balconies in temperate and Mediterranean climates, especially in Europe. More than 250 species are cultivated, and there are highly appreciated varieties on the table:
- common geranium (Pelargonium x hortorum): It reaches about 60 cm and offers white, purple or red flowers.
- Zonal geranium (pelargonium zonale): Very popular for its long flowering period and resistance to sun.
- Lemon geranium (Pelargonium crispum): It gives off a citrus aroma and is useful for repelling pests and insects.
In addition to their ornamental function, some species of geraniums offer medicinal properties traditionally used in the treatment of respiratory conditions and to soothe minor discomfort.
Preparing geraniums for winter
Before the arrival of low temperatures, it is important to prepare the geraniums by following some basic steps:
- Proper pruning: Move geraniums to a sheltered location before the first severe cold snaps. Cut stems in half and remove dead leaves and branches to encourage vigorous growth in spring and reduce the risk of disease. For more information on how to do this, see our guide on tricks to make geraniums bloom.
- Location and temperature: Place the plants in an area with temperatures between 5 and 10°C, away from direct heat sources such as radiators. Natural light is essential; a south-facing window is ideal if they are indoors. In this regard, you may also be interested in learning what Plants can be placed on the window.
Tip: If possible, grow geraniums in pots to make it easier to move them indoors during the winter. This will prevent irreversible damage from extreme cold.
How to protect geraniums from frost
- Move the pots closer to the wall: Place planters next to the facade, which will reduce exposure to cold and frost.
- Use protective materials: Cover plants with frost-resistant fabrics, old blankets, or special plastic sheets to create a mild microclimate. Mulching the substrate with straw, bark, or compost protects the roots.
- Homemade greenhouse: If you have a small greenhouse on your balcony or terrace, use it to protect your geraniums. These greenhouses can protect several plants at once and can be removed on warm days.
- Avoid cold drafts: Strong currents can damage plants, so look for sheltered locations.
Watering and maintenance during the winter
The irrigation regime in winter should be very moderateWater approximately every two to three weeks, always checking that the substrate is completely dry before adding water again. Excess moisture can cause root rot, a common problem in cold environments. For proper storage, we also recommend consulting our article on When and how much to water geraniums.
Avoid wetting the leaves and empty the pot's saucer if water accumulates to prevent the growth of mold and fungal diseases. Fertilizing is not necessary during this stage, as the plant is dormant and wouldn't benefit from the extra nutrients.
Pruning and transplanting during the cold period
Pruning is a key task in the maintenance of geraniums in winter. Do this when flowering has finished, trimming the main stems and removing faded leaves and flowers. If you live in a region with very cold winters, it is preferable to delay the main pruning until late winter to prevent frost damage to the plant after cutting. For more information on this process, you can consult our guide on how to have beautiful geraniums.
If you've planted your geraniums directly in the ground, transplanting them into pots makes them easier to protect indoors. Use a loose, well-drained potting soil rich in organic matter to ensure the plant can weather the winter in the best possible condition.
Reproduction of geraniums by cuttings
Winter is also a good time to propagate your geraniums by cuttings. Select young, flexible stems, make the cut below the second node, let the cutting dry for a day, and apply rooting hormone if desired. Plant the stem in a pot with permeable substrate and keep it in a protected, bright location. Make sure the substrate doesn't dry out completely to promote successful rooting of new plants. To expand your knowledge, you can also consult articles on .
Signs of cold damage and solutions
- Brown or black leaves: symptom of frostbite.
- Soft, watery stems: possible irreversible damage.
- Leaf loss: heat stress or overwatering.
If you experience these symptoms, act quickly by placing the plant in a protected environment, removing damaged parts, and adjusting watering. For more tips, also visit our section on Basic care for outdoor plants.
When to return geraniums to the outdoors
As temperatures gradually rise, when the risk of frost has passed, geraniums can return to the outdoors. Make the transition gradually, gradually increasing exposure to direct sunlight and outdoor temperatures to avoid sudden stress on the plant. For specific tips, see our page on plants with red flowers that bloom in spring.
With this care, your geraniums will not only survive the winter, but will also be ready to offer even more generous blooms when spring arrives, filling your balcony, garden, or terrace with color and life all year round.
