Pruning Clematis

March 06 2025, 6 min reading time

Clematis (also called Bosrank) is a popular climbing plant known for its spectacular flowers and the ability to cover walls, fences, and other structures. Whether you are looking for a garden plant for a vertical garden or a colorful border, Clematis is an excellent choice. Pruning is an essential part of maintaining this beautiful plant to promote its health, improve flowering, and keep growth in check. In this blog, you will read everything you need to know about pruning Clematis and which Clematis varieties require specific pruning.

When to Prune Clematis?

The right time to prune your Clematis depends on the type of Clematis you have and when it blooms. In general, the following applies:

Spring-flowering Clematis (such as Clematis Armandii) should be pruned after flowering, usually in summer or early autumn.
Summer- and autumn-flowering Clematis are best pruned in early spring, before new growth begins.

Pruning Clematis promotes healthy growth and stimulates new flowering. It can also help to keep the plant in the desired shape and remove excess, old branches.

How to Prune Clematis?

Pruning is an important part of Clematis maintenance, and by applying the correct technique, you can help the plant produce its most beautiful bloom. Here are the most important steps to prune your Clematis correctly:

Required tools: Make sure you have sharp tools, such as pruning shears or lopping shears. This makes a clean cut and prevents damage to the plant.
Remove dead or damaged branches: Always start by removing dead, diseased, or damaged branches. This prevents diseases from spreading and helps the plant focus on healthy growth.
Remove wilted flowers: This can promote flowering. Remove the wilted flowers by cutting them off at the base of the flower stalk.
Prune old branches: If your Clematis is too large or overgrown, you can prune old branches to keep the plant under control. Prune the older branches back to just above a healthy bud or well-developed shoot to encourage new growth.
Prune for a beautiful shape: If you use your Clematis as a climbing plant, you can prune the plant to give it the desired shape. This can help to guide the plant neatly along a pergola, fence, or wall.

How short should you prune Clematis?

When pruning Clematis, it is important to know how short to prune the plant. This varies depending on the type of Clematis and the growth phase:

Summer- and autumn-flowering Clematis can be pruned back to about 30-45 cm above the ground.
Early bloomers (spring-flowering Clematis) should not be pruned too short; only remove dead and damaged branches.

Clematis Varieties Pruning

Different species Clematis have different pruning instructions. Here are specific tips for pruning the most popular varieties:

Pruning Clematis Armandii

Clematis Armandii is an early-flowering Clematis that blooms in the spring on old wood. Prune this plant immediately after flowering to avoid damaging the flower buds. Remove dead or damaged branches and prune the plant back lightly to maintain its shape.

Pruning Purple Clematis

Purple Clematis, such as Clematis viticella, is a summer bloomer that is best pruned in early spring. Prune the branches back to 30 cm from the ground to give the plant room for new growth and abundant flowering.

Pruning Clematis Jackmanii

The Clematis Jackmanii is a popular variety that blooms in the summer. Prune this Clematis in early spring to about 30 cm above the ground. This stimulates abundant flowering and healthy growth of new branches.

Pruning Clematis Multi Blue

Clematis Multi Blue has many flowers in the summer and blooms on new wood. Prune this Clematis in early spring, cutting the plant back to about 30-45 cm above the ground to ensure strong growth and flowering.

Pruning Early-Flowering Clematis

Early-flowering Clematis, such as Clematis montana and Clematis Armandii, usually bloom in the spring and on old wood. These must be pruned with care, as over-pruning can lead to fewer flowers in the spring. Prune these varieties immediately after flowering to stimulate new growth without disturbing the bloom.

Pruning Old Clematis

When you have an old Clematis that has not been pruned for a long time, it may be necessary to prune more rigorously to breathe new life into the plant. Cut back the old, overgrown branches to 30 cm from the ground, depending on the variety. This promotes new growth and ensures that the plant remains healthy.

What Happens If You Don't Prune a Clematis?

If you do not prune your Clematis, the plant may become overgrown and flower less well. Branches can become twisted, which impedes air circulation and makes the plant more susceptible to diseases. Furthermore, too many old branches can disrupt the growth of new shoots, leading to a decrease in flowering. Not pruning your Clematis can also cause the plant to lose its compact, neat shape.

Clematis Care after Pruning

After pruning Clematis, it is important to take good care of the plant so that it can recover well and bloom optimally. Here are some care tips:

Watering: Water your Clematis well after pruning to help the roots recover and stimulate new growth.
Fertilizing: After pruning, a light fertilization with a balanced fertilizer can help promote the growth of new shoots.
Mulching: A thin layer of mulch helps to retain moisture and protect the roots from extreme temperatures.
Checking for diseases: Regularly check your Clematis for signs of diseases or pests such as mildew or aphids. This prevents further damage to the plant.

By applying the correct pruning and care techniques, you can ensure that your Clematis continues to bloom throughout the season and remains healthy. With proper care, this beautiful climbing plant will be a striking and vibrant addition to your garden.