Don’t Throw Away Your Geranium (Pelargonium)! Turn a Stick into a Lush Bush – It Really Works! | May 21, 2025

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How to Rejuvenate and Shape a Lush Pelargonium (Geranium) Bush

Pelargonium, commonly known as geranium, is a popular plant known for its bright and abundant flowering. Over time, these plants can become elongated, lose their lush shape, and flower less profusely. To maintain their beauty and vigor, regular pruning is essential. This article will explain how to rejuvenate an overgrown pelargonium, form a compact and bushy plant, and also provide an effective method for rooting cuttings.

When to Prune Pelargonium

Pruning pelargonium not only helps to maintain its shape but also stimulates the emergence of new shoots, making the plant more compact and lush. Ideally, pruning should be done after flowering. If the plant is currently producing buds or flowers, it is best to wait until the blooming period is over before cutting it back.

However, if the plant has recently finished flowering, pruning can be done immediately. In particular, pruning in January or February can encourage the activation of dormant buds and allow the plant to rest before the next flowering phase in spring or early summer.

How to Prune Pelargonium

To ensure successful pruning, follow these steps:

Use a sharp, disinfected knife or pruning shears – This helps prevent infection and damage to the plant.

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Cut back all shoots, leaving a height of about 8-10 cm from the soil level – This will result in a small but compact bush that will soon develop new growth.
Disinfect the cuts – To prevent disease and fungal infections, sprinkle the cut areas with cinnamon powder. This natural antiseptic helps protect the plant while it heals.

Post-Pruning Care

After pruning, it is important to reduce watering. The plant should be left undisturbed until the dormant buds begin to wake up and new growth appears. Once new leaves start to emerge, watering can be gradually increased.

At this stage, feeding the plant with a nitrogen-rich fertilizer can help speed up the growth of green mass. However, fertilization should be done in moderation, as excessive nitrogen can lead to overly lush foliage at the expense of flowering.

Propagating Pelargonium by Cuttings

The cuttings obtained during pruning can be used to propagate new plants. Pelargonium cuttings root easily and grow into healthy plants when the proper method is followed.

Steps for Preparing and Rooting Cuttings:

Select cuttings – Choose healthy shoots that are about 6-7 cm in length.
Remove excess leaves – Each cutting should have only 2-3 leaves remaining. If the leaves are large, they can be cut in half to reduce moisture loss.
Treat the cut ends – Just like with the main plant, the cut ends of the cuttings should be sprinkled with cinnamon to prevent infection.
Allow the cuttings to dry – Before planting, let the cuttings rest for a couple of hours. This will allow the cut surface to dry slightly, reducing the risk of rotting.

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Choosing the Right Medium for Rooting

Cuttings can be rooted in different types of substrates:

Loose potting soil – A store-bought, well-draining potting mix can be used.
Perlite or vermiculite – These materials provide excellent aeration and prevent water retention, reducing the risk of root rot.

If vermiculite is chosen, cuttings tend to root exceptionally well due to its moisture-retaining properties.

Planting the Cuttings

Fill small cups or pots with the chosen substrate – Ensure the container has drainage holes.
Make a small hole in the substrate – A shallow hole will help position the cutting securely.
Apply a rooting stimulant – If available, a small amount of rooting hormone can be added to the hole. If rooting hormone is unavailable, crushed aspirin tablets can be used as a substitute. Sprinkle a little of the aspirin powder onto the cut end before planting.
Insert the cuttings into the soil – Place the cuttings about 2 cm deep into the substrate.

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Water moderately – If the substrate is dry, lightly moisten it with water. Avoid overwatering at this stage.

Creating Optimal Rooting Conditions

To ensure successful rooting, place the planted cuttings inside a transparent plastic bag or cover them with a plastic dome to create a greenhouse effect. Keep them in a warm, bright location but away from direct sunlight.

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