Pruning Geranium (Crane's-bill)
, 8 min reading time
Geranium (also called Stork's-bill) is a beloved garden plant that requires regular maintenance to retain its most beautiful shape. This versatile plant is not only a beautiful bloomer, but also an effective ground cover. To keep the plant healthy and compact, it is important to prune at the right time. In this blog, you will discover how and when to prune geraniums for a full and blooming garden!
When to Prune Geraniums?
Pruning geraniums is essential to prolong flowering and keep the plant fresh and vital. The timing of pruning depends on the season and the specific needs of the plant. By pruning at the right time, you ensure that your Geranium remains compact and blooms profusely year after year.
Pruning Geraniums in Winter
You do not need to prune Geraniums in the winter. Most varieties die back above ground and withdraw their energy into the roots. This natural process helps the plant prepare for strong regrowth in the spring. You can leave any dried parts in place as protection against cold and frost. In early spring, the first new shoots will emerge on their own.
Pruning Geraniums in Spring
As soon as the frost period is over (usually in March or April), it is time to clean up your Geraniums. Remove all dead and withered stems and leaves to make room for fresh, new growth. This pruning time is important to keep the plant healthy and prevents old, weakened parts from attracting diseases or fungi. Use sharp pruning shears and cut just above the new shoots for optimal results.
Pruning Geraniums in Summer and Autumn
Many geraniums bloom profusely in spring and early summer. As soon as the first flowering period is over, you can lightly cut back the plant to encourage a second bloom. You do this by removing spent flowers and long, leggy stems. Some varieties, such as Geranium ‘Rozanne’, bloom well into autumn if they are pruned regularly.
In late summer or early autumn, you can prune again to keep the plant tidy and prevent it from growing too wildly. Keep in mind that late pruning just before winter is not always necessary, as the plant will then retract on its own.
By pruning at the right time, you will enjoy a full, healthy, and flowering Geranium every season.
How to Prune Geraniums?
Pruning geraniums is essential to keep the plant healthy and flowering. By pruning regularly, you stimulate new growth and ensure the plant remains compact. But how exactly do you go about this? Follow the steps below to prune your geraniums correctly.
Step-by-step plan for pruning geraniums
- Choose the right moment – Prune geraniums in the spring (March/April) and optionally lightly in the summer to remove spent flowers. In the autumn, you can prune them back before they go into winter.
- Use sharp pruning tools – Sharp pruning shears or clean garden shears prevent damage to the plant.
- Remove dead and diseased parts – Cut away all withered flowers, yellowed leaves, and diseased branches to keep the plant healthy.
- Prune back for compact growth – Cut back long, stretched stems to just above a leaf node. This stimulates new branching.
- Regular topping for a full plant – By occasionally removing the top growing points, the geranium grows fuller and bushier.
- Good care after pruning – After pruning, water the plant and optionally add a little fertilizer to promote recovery and new growth.
How short should I prune Geraniums?
The length at which you prune a geranium how much to prune depends on the season and the health of the plant:
- Spring pruning: Prune the plant back to about 10-15 cm above the ground. This ensures vigorous new growth.
- Summer pruning: Only cut away spent flowers and dead leaves to prolong flowering.
- Autumn pruning: Do you want to overwinter the geranium? Then prune the plant back lightly and remove weak or damaged branches. For geraniums that remain outdoors, a heavy pruning of up to 10 cm can help prepare them for winter.
With these pruning tips, you will keep your geraniums strong and flowering throughout the entire season!
Pruning Cranesbill after Flowering
Cranesbills (Geranium species) often bloom profusely in early summer. They can grow quite large and often form a dense canopy.
- Pruning back after the first bloom: As soon as the first flowering period is over (usually in June or July), you can prune the plant back heavily to about 10 cm above the ground. This promotes a second bloom and ensures that the plant remains compact.
- Maintenance pruning: Regularly remove spent flowers and yellowed leaves to keep the plant healthy.
Pruning Geranium Species
Not all geraniums require the same pruning method. Some species require a heavy pruning after flowering, while others need only light maintenance. Below, we discuss the most popular geranium varieties and how best to prune them to promote healthy growth and long-lasting bloom.
Pruning Geranium Rozanne
Geranium Rozanne is one of the most beloved geranium varieties due to its long-lasting bloom from May well into autumn. This strong, hardy plant spreads widely and can cover large patches of ground.
- Summer Pruning: After the first bloom in the summer, you can lightly cut back the plant to stimulate new growth and extend the flowering period. Especially cut back long, leggy shoots to keep the plant compact.
- Spring pruning: In early spring (March/April), it is important to remove dead and damaged leaves and stems. This gives the plant a fresh start and stimulates growth.
- Spring pruning: In early spring, you can remove dead leaves and old stems to keep the plant fresh and healthy.
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Light pruning after flowering: After flowering in June, you can prune the plant back lightly to keep the shape neat. Avoid drastic pruning, as this species often recovers well on its own.
Pruning Geranium Cantabrigiense
This low-growing geranium has a compact growth and a long flowering period, usually from May to July. The Geranium Cantabrigiense is a low-maintenance species that thrives in borders and rock gardens.
- Spring pruning: In early spring, remove old leaves and dead stems to make room for new growth.
- Summer pruning: After flowering, lightly cut back the spent flower stalks and long shoots. This helps to maintain the compact shape of the plant and promotes a second bloom.
Pruning Geranium Johnson Blue
Geranium Johnson’s Blue is a popular blue-flowering geranium that blooms early in the summer. This species grows quickly and can take on a loose, wild appearance if not pruned regularly.
- Pruning after flowering: After the first flowering (usually in July), you can prune back the spent flower stalks and long, limp shoots. This stimulates a second flowering and prevents the plant from becoming too messy.
- Autumn pruning: If the plant looks untidy in the autumn, you can prune it back lightly. This helps keep the plant tidy for the winter.
By applying the correct pruning methods to the different geranium varieties, you keep them healthy, flowering, and in optimal condition. Each variety has its own needs, but with regular care, you can enjoy beautiful flowers and strong growth for years.
Caring for Geraniums After Pruning
After pruning, it is important to take good care of your geraniums so that they recover quickly and can develop new growth again.
Give the geraniums outdoors a light fertilization to support growth. This ensures that the plant receives the right nutrients to recover quickly and bloom again. Additionally, ensure sufficient water, especially during dry weather, so that the roots remain well moist and the plant does not dry out. Regularly remove spent flowers to stimulate flowering and prevent the plant from wasting energy on seed development. This ensures a longer flowering period and a healthier appearance. You can also lightly prune the geraniums again after flowering to maintain their shape and keep the plant in top condition.
Read more in our blog: Caring for Geraniums Outdoors!
With the right pruning and care techniques, your geraniums will remain healthy and bloom profusely. This way, you can enjoy a beautiful garden full of color and greenery all season long!
Pruning Geranium Macrorrhizum
This evergreen ground cover requires little maintenance and is one of the hardiest geranium species. The leaves emit a pleasant scent and the plant is drought-tolerant.
