Alpine geraniums are highly forgiving and simple to care for. The only conditions the plants won’t endure are damp soil and extreme shade. The plants love well-drained soil and full sun.
They are hardy from zones 6 to 9 or 7 to 9 depending on the cultivar. They need very little maintenance; in the warmest, driest months, they may benefit from some more watering, but generally speaking, they just require a small amount of additional water.
Aphids may feast on them indoors, but outside, they are essentially pest-free.
They can be multiplied in the spring by dividing fresh branches from the old crown.
There is nothing more to it than that, so consider adding some alpine geranium plants to the area if you’re looking for some simple ground coverage.
What kind of plant is Alpine Geranium?
Alpine Geranium Erodium reichardii ‘Charm’ bears delicate pink blooms on low mounds of small, scalloped blue-green leaves. From late spring until middle summer, Erodium ‘Charm’ flowers. Rock gardens and fairy gardens both benefit greatly from the adorable flower mounds. Perennial erodium ‘Charm’ is semi-evergreen.
Erodium reichardii, often known as Alpine Geranium, prefers sunlight to light shade and well-drained soil, especially in the winter. It can withstand relatively little foot traffic. spaced at 6″ intervals
where to grow geraniums
Geraniums don’t care too much about soil types, preferring it to be moist and well-drained like other plants, but once established, they may live in the rain shadow of buildings, shrubs, or trees.
when to plant geraniums
Geraniums can be planted in the spring, from March to May, to establish themselves before the heat of the summer and provide you with blooms all season. In order to give them time to create a strong root system and begin blooming for you in the spring, you may also plant in the autumn between September and October when the soil is still warm.
Where may geraniums be grown successfully?
To cultivate geraniums, you don’t have to be an expert gardener. Geraniums don’t require much in the way of particular care and don’t care much for expensive fertilizers or niche soils.
For geraniums, soil
A loose soil with lots of organic materials is ideal for geraniums. Add peat, compost, or perlite if your soil is on the heavier side. Vermiculite and manure are not advised.
Geranium Planting Locations
Nearly all gardening zones are suitable for geranium planting. Even after understanding this, you might still wonder if geraniums require full sun. Geraniums need a lot of light to bloom, although in regions with hot summers, some shade is advised. The answer to the question of how much sunlight geraniums require varies on the particular geranium and your gardening zone. The optimum position has well-draining soil, morning sun, and afternoon shade. Pick a spot that is the right size for your geranium flower beds. The risk of illness is decreased by maintaining the proper distance between plants.
Geranium Planting Season
Planting season shouldn’t be rushed because geraniums aren’t cold resistant. If you hold off too long, though, you run the risk of missing the low nighttime temperatures that promote budding. Planting at the right time is the first step in understanding how to cultivate geraniums outdoors. Wait till your soil reaches 60 degrees F and the threat of the last frost has passed.
Geranium-specific fertilizer
Light fertilizing is required for geraniums. If you overfeed them, the blossoms will suffer while the foliage thrives. You don’t need to buy a specialized geranium fertilizer, despite the fact that you may notice it in your local garden center. Combine 2 teaspoons of a water-soluble 20-20-20 fertilizer with 1 gallon of water for a mild fertilization. Every three weeks during the growing season, apply this solution.
Geraniums in Containers
You may be wondering how to pot-plant geraniums. Actually, it’s as simple as putting them in the ground. You require a soil that is loose and well-draining, regular watering, and minimal fertilizing. As long as the container has drainage holes, geraniums thrive in various sizes and shapes of containers. The secret to growing geraniums in pots is to put them in sunny spots away from windy areas.
Geraniums grown in pots have the extra advantage that you may easily bring them indoors for the winter. Geraniums will flourish as a houseplant even in the coldest months if they are put in a sunny window. After the last frost, gently reintroduce them to the outside in the spring.
giving geraniums water
Take the time to leave an irrigation furrow around each plant to act as a watering reservoir since geraniums require deep, thorough watering. As a result, water can collect and then slowly percolate through the soil. Allow the soil to dry out in between waterings to prevent root rot. Using a soaker hose to water at ground level keeps water off the leaves and guards against illness. Geraniums need to be watered frequently because the soil in pots likes to get heated. You can water plants without waiting for the soil to dry up between applications since the drainage holes assist prevent root rot.
What volume of water do geraniums require? You’ll just need to keep an eye on your plants. Avoid allowing your geraniums to wilt for proper geranium plant care. Poor flower production and leaf shedding occur as a result of withering and revival cycles.
Geranium pruning
Outdoor-planted annual geraniums don’t require pruning, but routine deadheading can help reduce disease and boost growth. After the flowers have faded, simply pinch off the entire flower stalk and pick the plants’ dried leaves. The geranium houseplant frequently develops long, slender legs. Pinching the growth tips on a regular basis will promote branching.
Geranium Common Pests and Diseases
Geraniums are generally free of insects and other pests. Botrytis and other fungus attacks, however, can happen in cooler, rainier climates. Commercial fungicides offer some level of defense. Oedema and root rot are two issues that can result from overwatering.
Are mountain plants winter-resistant?
Now that December has here, I’m going to offer some winter tasks in the alpine garden to keep you warm and occupied during these brief, chilly days. Last month, I shared with you some of the beauties of fall.
Tidying up
Even the most dedicated gardener may find it tempting to take a break throughout the winter and daydream about the delights of spring. Humans have a tendency to ignore the obvious messiness of dying flower stalks and heads. However, you must put some effort into maintaining the alpine garden in order to get the most out of your plants the next season.
Cleaning up plants in pots is frequently necessary, with cushion plants’ removal of dead or mildewed rosettes being of utmost importance. Make use of a pair of precise, fine-pointed scissors and fine tweezers. Spread of fungal illnesses can be prevented by applying green sulphur to the cushion’s troubled spots.
Pruning dwarf shrubs
Dwarf shrubs may outgrow their designated space if they aren’t clipped regularly. It is advisable to prune frequently when the secateurs’ attention will hardly be noticed. Additionally, pruning offers a chance to modify a shrub’s shape and determine its worth in the winter garden. Does it “pay its way”? If not, should you get rid of it and replace it with something more appropriate? If this is the case, the optimum time to transplant most shrubs is in the early winter.
Hardwood cuttings
Prunings may create suitable hardwood cutting material for a dwarf shrub’s growth. Few people bother with hardwood cuttings in this era of “instant gardening,” although many species are relatively simple to increase this way. Use growth that was created the season before, give it a sharp knife trim at the base, and take off any leaves that would be buried in the rooting medium. Line out in grittly, quickly draining compost pots or trays, or even directly in such compost in a cold frame, water thoroughly, cover (without heat), and leave alone. only when it is obviously required to drink water.
Few, if any, of the cuttings are expected to take root before the following spring. Patience is a virtue because sometimes a whole season can pass. You may be fairly certain that production of below-ground roots will begin once the cuttings start to sprout vigorous new growth. Pull the cutting gently, and if there is resistance, slowly lift it and pot it in a compost that is made of free-draining loam. Till they are distinctly well-established, keep the cuttings in the shade.
Cutting back and keeping plants in bounds
Some plants, notably cushion plants and bulbs, can often take care of themselves for a long time. To keep bulbs from getting too crowded, an intervention may be necessary every now and then. It could be important to stop some pillows from crowding less active neighbors or taking up too much room. It could be necessary to control other, more tenacious garden inhabitants more often and vigorously. When viewed amid a mound of dead foliage from the previous season’s growth, pulsatilla blooms don’t look particularly attractive. Similar to this, certain rosette-forming plants have flower stalks that die off but do not vanish on their own. The lovely, hassle-free, and long-living Crepis incana is a prime illustration.
Cleaning and tidying the alpine house and frames
Late autumn and early winter are wonderful times to clean and organize your alpine home and/or frames if you grow alpines under glass. Remove any potted plants first so that the staging, whether with or without a plunge, can be cleaned. In pots, weeds can be pulled out and the gravel top dressing changed.
Remove the top centimeter of the plunge material and any moss or lichen from clay pots that have been plunged. Likewise thicken the new plunging material. Replace the pots now, making certain that the pot and plunge have excellent contact. Plastic pots that are on the staging or in a frame require removal before the gravel base may be sterilized with hot Jeyes fluid. The noxious odors are then allowed to dissipate for a few days before I replace the pots.
Cleaning the glass
Now is the perfect time to take off any paint-on shading compound you may have used to guard against scorch damage throughout the summer. During the lengthy, gloomy winter days, you want to give your plants the most exposure to the sun possible. The solution is hot soap and water. You might want to wipe the interior of the glass as well if it isn’t perfectly clear.
Keeping the air moving
For alpines, the worst possible habitat is cold, damp, stagnant air. Open the alpine house doors, ventilators, and frame lights, unless the weather is extremely bad. On the worst of days, a tiny electric fan can help keep the air circulating. I’m going to assume that you won’t be heating your alpine home or frames very much. However, you might cultivate some plants that could perish in a strong frost. On a very chilly night, a thermostatic electric fan set to slightly above freezing might relieve a lot of anxiety!
Providing winter protection
While the majority of alpine plants can withstand the harshest winter conditions, others cannot. Often, a combination of cold and wet conditions—rather than just cold temperatures—are what kills sensitive plants. This frequently has to do with the ecology of the plant in its natural environment. In the winter, a thick layer of insulating snow consistently blankets many alpines growing at high altitudes. They are insulated from the dangers of alternating freeze and thaw as they lie dormant. However, this is not the case when they are planted in temperate lowland gardens where snow, if any, is likely to melt as quickly as it arrived.
When the winter temperature is so uncertain, plants with hairy leaves are especially vulnerable to rot. Naturally, in their latent state, they are unable to utilize the extra water. Additionally, they are unable to shed it like less hirsute plants may. Therefore, it is wise to offer a cover for hairy cushions during the wettest and coldest seasons. This could be a ceiling made of a glass or plastic sheet that is supported by wires. Or, if there is enough room, a typical garden cloche. Make sure the space between the cover and the plants is properly ventilated.
Naturally, protecting plants that are planted in containers rather than in the open ground is considerably simpler. If you don’t have a glasshouse, a straightforward garden frame will do.
Creating and remaking alpine beds
Gardeners always have a limited amount of time during the growing season, so significant projects like making or remaking alpine beds sometimes get put off. Winter days that are occasionally calm and dry offer the chance to work in the alpine garden without being distracted. And it can be highly fulfilling job if proper planning is done and the required equipment and resources are available (see the pertinent sections in my AGS Beginner’s Guide).
Few alpines will tolerate poorly drained soil, let alone winter waterlogging, thus it is essential to provide appropriate drainage. Consider creating raised beds rather than attempting to improve drainage if your subsoil is impermeable clay. The quantity of soil needed to fill these beds and the labor necessary to transport it may turn you off. Keep in mind that this is a one-time cost, and the effort will benefit you on a chilly winter day!
You can make adjustments as you redo a bed, possibly by replacing plants that haven’t done well in the past. Or perhaps adjusting their position now that you are aware of their potential. And arranging plants into more aesthetically pleasing groups based on their form, rate of development, size, and color of their flowers or leaves. You might want to change the placement or quantity of the rock you use. A standard “lumpy” rock garden might not be the best way to display your alpine flora; perhaps a crevice garden will. One of the foremost proponents of crevice gardening’s design and building has written a fantastic AGS guide on the subject. (See under)
Revised edition of The Crevice Garden and its Plants
Product
The AGS manual on creating crevice gardens and the plants to grow in them has been updated and enlarged. Updates to the text and the…
Can geraniums survive the cold outside?
Knowing how to overwinter geraniums is very useful for gardeners since it can help them save money and extend the life of particular varieties they enjoy.
Pelargoniums, sometimes known as geraniums, are mainstays of the summer garden. Geraniums are ideal for adding cheer and long-lasting color to hanging baskets, containers, and borders since they come in a variety of colors and flower continually as long as they are deadheaded.
However, when making your job list, you might consider including them as one of your winter garden ideas.
When growing frost-sensitive plants, planning a winter garden is crucial. Geraniums are perennial plants that put on a long display, but they are frost tender, which means they won’t survive harsh winters. If you are interested in cultivating geraniums, you must learn how to overwinter them.
Geraniums are South African natives that thrive in the heat and can withstand periods of drought with little water.
Pelargoniums, sometimes known as geraniums, may live in USDA zones 7 to temperatures of -12oF (0oC) if they are sheltered. They are hardy in climates between 20oF and 50oF in zones 9 through 12. They need to be sheltered in these conditions because, while they can withstand brief frosts (temperatures slightly below freezing), they cannot withstand prolonged exposure.
The Pelargonium genus contains a wide range of cultivars, all of which are categorized as delicate perennials. According to David Taylor, vice chairman of the UK Pelargonium and Geranium Society, “this means that they are not cold hardy as the majority of the founding species come from the warmer climbs of the Southern Hemisphere.
Perennial plants are able to flourish for a number of years, however in the UK this would mean that they would also need to be sheltered from winter wet and damp in addition to frost.
Geraniums can be cared for like annuals by being dug out in the fall, composted, and then replaced with fresh plants the following year. The appropriate care and attention, however, will enable you to winterize geraniums, keeping them alive throughout the winter so they can bloom once more the following year.
According to David Taylor, vice chairman of the UK Pelargonium and Geranium Society, “Keen enthusiasts keep their pelargoniums in growth during the winter and continue to feed and water but a few key points can be undertaken by anyone to keep your pelargoniums (geraniums) alive throughout the winter” (opens in new tab).
Pelargoniums are known as geraniums, but these plants are not the same as hardy geraniums or cranesbill, which are a different kind of plant and don’t need to be overwintered.