Gardeners have traditionally favored geraniums. They smell wonderful, are colorful, and are simple to grow. How to cultivate geraniums in your house and garden is provided here!
(Note: This page is about Pelargonium plants, sometimes known as geraniums or storksbills. This is not a page about “hardy geraniums, also referred to as cranesbills.
Geraniums are normally kept indoors to overwinter, even if they may be kept outside throughout the warmer months of the year. In contrast, if given enough light, they can bloom all year long indoors.
Geranium or Pelargonium? A Case of Mistaken Identity
Early in the 18th century, Dutch traders who were traveling through South Africa brought the plants that we now refer to as “geraniums” to Europe. Botanists misclassified these new plants into the same genus because they resembled the hardy wild geraniums that are already present throughout Europe.
Botanist Carl Linnaeus of Sweden included them in the genus Geranium in 1753. Pelargonium, which refers to the long, sharply pointed shape of their seedpod, was used to reclassify these new “geraniums when it was later revealed that they differed from European geraniums in the shape of their petals, the number of stamens, and other features.
However, people still refer to them by their old common name, “geranium,” even if we really mean “pelargonium.”
- You can grow geraniums as annual blooms or as indoor plants. They can be kept outside in a sunny area throughout the warmer months of the year (between your local frost dates).
- If keeping geraniums as indoor plants, make sure to do so in the late summer or early fall when overnight lows begin to consistently fall below 55F. (13C).
- Pay great attention to the size and color of geraniums when purchasing them. Healthy stems and leaves will not be straggly or discolored on top of them or underneath them. A plant with evident insect indications should also be avoided. Mealybugs, whiteflies, and spider mites are typical indoor plant pests.
- To prevent root rot, put plants in containers with drainage holes.
- When planting in pots, use a well-draining potting mixture rather than heavy, clayey soil. Geraniums dislike being planted in mucky, compacted soil.
- Place the plants where they will receive 4-6 hours of sunlight per day for the best bloom.
How to Care for Geraniums
- After letting the soil somewhat dry between waterings, water it again well.
- Water plants significantly less throughout the winter, but make sure the roots are not completely dried up. Given a time of hibernation throughout the winter, when they consume less water and don’t grow as much, geraniums thrive. For additional overwintering tips, see the section below.
- Regularly deadhead spent flowers to promote blooming.
- Pinch back the stems to encourage bushiness and prevent legginess.
- Fertilize approximately every two weeks throughout the active growing months. Half-strength a fertilizer that is water soluble When the plant should be dormant in the winter, avoid fertilizing.
- Repotting geraniums can be done in the spring to promote new growth or if they appear to need revitalization.
Overwintering Geraniums
- If they receive plenty of sunlight, geraniums that have spent the summer outdoors can be kept indoors. The sun may not be strong enough in northern regions in late winter to promote buds on some cultivars.
- Lift the plants before the first fall frost (you can find your local frost dates here), and use a sharp, clean knife to shapely prune the stems back to about 6 to 8 inches. In the low-sunlight environment they are about to enter, they shouldn’t have to maintain substantial amounts of leaves. A simple technique to increase the number of your plants is to save a few stems for rooting.
- Place the “mother plant” in the smallest pot you can find—just big enough to hold the roots—and fill it with ordinary potting soil.
- The plants should be kept in the shadow for a week before being moved to a sunny location and kept cool.
- Geraniums thrive in temperatures between 50 and 60 degrees Fahrenheit (10 and 16 degrees Celsius) at night during the winter, but they can also withstand lows of 32 degrees Fahrenheit (0 degrees Celsius) and highs of 80 degrees Fahrenheit (27 degrees Celsius), provided they are kept relatively dry.
- Cut off all the old leaves when the spring growth begins.
Keeping the new growth alive is the only challenge that can compare to getting it to appear. Here is some assistance with that:
- Only offer tiny quantities of water when the leaves begin to droop. Don’t feed or fertilize the plants. These plants must have some downtime.
- Pinch back your overwintered geraniums in February if you want them to bloom by Memorial Day. Take the plants outside and move them to beds or pots, as you like, once warm weather returns and all threat of frost has passed.
- Containers are ideal for growing the Common or Zonal Geraniums (Pelargonium x hortorum) (as well as outdoors).
- Hanging baskets, window boxes, and containers are all extremely popular places to use Ivy-Leaf Geraniums (Pelargonium peltatum).
How to Root Stem Cuttings
The majority of geraniums readily take root from stem cuttings when placed in soil, sand, water, perlite, or another rooting medium.
- Make a slanted incision 4 inches below the tip of the stem, above the node where the leaves emerge, with a clean, sharp knife. Cut the grass immediately below a node. Remove all except two or three leaves, any buds, and the stipules that resemble leaves at the base of leaf stalks.
- To ensure that the cut end of the stem will seal and not rot, roll the stem cutting in newspaper or place it in the shade for 24 hours.
- Place the stem in a wet rooting media container and keep it there for two days in a warm, shaded area. Give the cutting indirect sun after that. Just as needed, moisten the medium.
- Apply crushed geranium leaves to small cuts to halt the bleeding.
- Scarlet geranium is the flower that speaks of foolishness. More floral meanings can be found here.
- You won’t have to worry about those bothersome bugs because geraniums are known to be harmful to Japanese beetles.
- Keep geraniums out of the reach of curious youngsters and animals (cats, dogs) as they might cause indigestion or vomiting.
Low light, overexposure, and underwatering are common issues. Yellowing leaves are a sign that you are watering your plants either too little or too much. Try to water the geraniums evenly in this situation, and transfer them to a more sunny location.
How may a geranium be started from cuttings?
Water should be added to the jar to cover the main stem but not the leaves.
Place in a space that maintains a temperature between 65 and 75 degrees Fahrenheit on a sunny windowsill.
To keep the water fresh, change it every day. At the base of the stem, roots should start to form after around four weeks.
Can geraniums be started from a leaf?
Yes, you can grow aromatic geraniums even from a leaf cutting. If you don’t have much stuff to work with, this may be useful.
Although leaf cuttings can also be planted in potting soil, stem cuttings are preferred since they are more dependable and take root much faster.
You can verify this by planting the lowest leaves from a stem cutting in their own potting soil instead of discarding them.
Cutting off a small portion of the stem while removing a leaf from the stem is essential for effectively propagating a geranium from it.
To prevent it from losing too much moisture, place the leaf between the compost and the side of the pot and cut back roughly half of the leaf surface.
Use a plastic cover in this situation, but make sure it doesn’t touch the leaf as it will greatly aid in the rooting process.
Do geraniums grow back?
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A geranium plant is the best kind of plant for a novice gardener to “clone” or propagate.
Geraniums are not only among the most widely cultivated plants in the world, but they are also among the simplest to produce from stem cuttings.
When you witness the wonder of growing your first plant, you will become addicted to gardening.
Please view this brief yet instructive video that outlines how to propagate ivy geranium plants.
“How to Turn One Geranium into Many Geraniums: Gardens of the Rich and Famous” is the title of the book.
Prepare your materials, and if you need step-by-step directions (with pictures), check my blog entry on the EdenMakers Blog, “Propagating Geraniums: Take Stem Cuttings”!
I’m delighted to respond to your inquiries. Just leave a comment below and send your curious friends the video’s link.
Can a clipping of a geranium be grown?
Geraniums may be started from cuttings fairly easily. The absence of a dormant season in geraniums is a significant benefit. They grow continuously all year long, so there is no need to wait for a certain season as with most plants in order to reproduce them.
However, it is preferable to wait until the plant’s flowering cycle is at a break. Cuttings from geranium plants should be made immediately above a node or a swollen portion of the stem using a pair of sharp scissors. Cutting in this area will stimulate new growth on the parent plant.
Make a second cut immediately below a node on your new cutting such that the distance from the leafy tip to the node at the base is between 4 and 6 inches (10-15 cm.). Remove everything but the leaves at the tip. You will be planting this.
Can a geranium clipping be rooted in water?
Geraniums can grow roots in water, yes. Approximately 6-inch-long cuttings should only have the top leaves left on them. Place the cuttings in a water-filled container in a well-lit area away from the sun. To prevent leaves from rotting in the water, make sure to remove all foliage from any cuttings that may fall below the water’s surface. Hopefully, the cuttings will ultimately produce roots so they may be replanted.
By putting the cuttings in moist vermiculite or perlite, you might have more success. These soilless products encourage good moisture retention and aeration. To promote root formation, dip the bottom end of the stems into rooting hormone. A slow-release granular fertilizer made for annual flowers works nicely on geraniums.
How long does it take geranium cuttings to grow?
To start new plants in pots outside, you might want to take them in the summer.
You can, indeed. However, I do believe that planting the cuttings immediately in damp soil yields better results.
In general, plants with water roots may develop swollen, delicate roots that may not adapt well to pots. Although many people root them in water, for best results, root them directly in potting soil.
The general guideline for plant propagation is that a stem will grow roots in water more readily the younger and less woody the stem is.
The length of time will vary according on the growing environment, but you should see fresh root growth in 6 to 8 weeks.
Yes, there are a number of ways to preserve geraniums during the winter:
Here are some potential outcomes:
1) Insufficient or excessive watering: Lower leaves begin to yellow first.
2) Contact with chilly temperatures (below 45F or 7C).
3) Dangerous plant.
4) A lack of nutrients in the potting soil.
Try repotting it in fresh potting soil or supplementing it with a slow-release organic fertilizer (follow instructions on label).
How long do cuttings of geraniums require?
Bedding geraniums, or pelargoniums, are easily propagated by cuttings in contrast to other annual bedding plants, saving you money on more plants the following year.
Your cuttings will grow roots and leaves quickly if they are kept on a warm windowsill during the winter. They will flower all summer long and be ready to plant outdoors in the spring.
Step 4
To help with drainage, add sharp sand and seed compost to containers. Place two or three cuttings around each pot’s edge. Compost should be watered, and indoor pots should be placed in a well-lit area. Covering the pots might increase the growth of mildew on the leaves, therefore avoid doing so.
Step 5
A corky callus will eventually form over the cut end of the stem after a few weeks, and roots will start to form. Within six to eight weeks, a strong root system will have formed.
Step 6
Pull each cutting out of the pot in March or April and replant it in its own multipurpose compost container. After all threat of frost has passed, keep well-watered and plant outdoors in the spring.
Remove any cuttings that are black or wilted as they may have a disease that could infect other plants.
How simple are geraniums to grow?
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.