General gardening topics

How to prune Lavender – Hardy and tender cultivars

Last updated on January 26th, 2022

Our site is reader supported, this means we may earn a small commission from Amazon and other affiliates when you buy through links on our site.

How to prune Lavender

Lavender (Lavendula), which is commonly used in cooking recipes, is a popular evergreen shrub that is often sold as a herb plant. They make beautiful plants for creating low formal hedges as the blue flowers give the appearance of a sea of blue and are often seen in many country estates where they have been growing for over 20 years.

They are drought tolerant and grow well in drier, poorer areas of the garden where other plants often fail. The fragrant flowers contain high levels of nectar that attract bees and butterflies and can also help to deter cats as they seem to dislike the smell!


Pruning Lavender

If you looking into pruning Lavender you will see some gardeners say prune them back hard whilst others advise against this as they may not survive. So do you prune them hard or not?

The answer is simple, it depends on what type of Lavender you have. There are two ways in which you can prune Lavender, so we will discuss first how to prune the common English Lavender (Lavandula angustifolia).

how to prune lavender

Pruning English Lavender

We recommend not pruning any Lavender in its first year of being planted because you want to try and encourage root growth and pruning will encourage foliage growth which may prevent them from putting out new strong roots.

English Lavender is the hardiest of all Lavenders and it is often used for creating low growing, formal hedging. The needle foliage is silver-green and it produces scented spiked blue flowers which the bees love. They really do need pruning every year because they soon become woody and pruning keeps them compact and bushy.

They usually flower around mid-summer and can be pruned back hard after flowering, which is usually around August. Cut back by around half and into the woody stems if needed, leaving them pretty bare. They will grow from woody stems and will put enough growth on to provide them with some protection through the winter before putting on lots of new growth the following spring.

Pruning more tender Lavender cultivars

If you have one of the more tender types, such as the Lavendins (Lavandula x intermedia) which flowers until around August or one of the French or Spanish Lavenders then you should not prune these types back hard. French and Spanish Lavender are identifiable by the tufted ears on the top of the flowers.

These more tender Lavender will not recover from a hard pruning. They only need trimming back after flowering by a couple of inches to trim them into shape. Trim back to green growth where the new growth will shoot from.

Although we recommend pruning after flowering, usually in the late summer, they could also be pruned in spring before new growth has started if you prefer. All Lavender will benefit from deadheading (removing faded flowers) throughout the summer.


Tender cultivars may need winter protection

We recommend growing tender varieties such as French and Spanish Lavender in pots or containers so they can be protected over winter from the worst of the weather. They do not like being wet and damp so are best moved into a greenhouse or placed against a wall or fence for the winter where they will be sheltered from the rain. It is best to let the soil become dry rather than being damp and only water when the soil becomes dry.


Feeding

As Lavender thrives in poor dry soils they don’t require much feeding but we do recommend feeding them in spring with potash that encourages more flowers and better colour. Never feed with a nitrogen feed as this encourages weak, sappy growth.

Welcome to my site, my name is John and I have been lucky enough to work in horticultural nurseries for over 15 years in the UK. As the founder and editor as well as researcher, I have a City & Guilds Horticultural Qualifications which I proudly display on our About us page. I now work full time on this website where I review the very best gardening products and tools and write reliable gardening guides. Behind this site is an actual real person who has worked and has experience with the types of products we review as well as years of knowledge on the topics we cover from actual experience. You can reach out to me at john@pyracantha.co.uk

Write A Comment