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Should You Cut Back Lavender After Flowering?
Yes, you should cut back lavender after flowering.
This simple habit keeps your plant healthy, shapely, and blooming generously year after year.
If you’ve been wondering whether you should cut back lavender after flowering, the short answer is a resounding yes, but timing and technique matter more than most gardeners realize.
In this post, we’ll look at why cutting back lavender after flowering is so beneficial, when to do it, how to do it properly, and the common mistakes to avoid.
Let’s dig in.
Why You Should Cut Back Lavender After Flowering
You should cut back lavender after flowering because it triggers fresh growth, prevents the plant from going woody, and keeps it tidy.
Here’s why this matters so much:
1. It Encourages Bushier Growth
When you cut back lavender after flowering, you remove the spent blooms and signal the plant to push out new shoots.
This is why lavender that gets a regular haircut after flowering looks fuller and more compact than lavender left to its own devices.
A bushy lavender plant produces more flower spikes the following season, which is exactly what you want.
2. It Prevents Woody, Leggy Plants
Lavender has a nasty habit of turning woody at the base if it’s never pruned.
Once lavender goes woody, it rarely produces new growth from that old wood, so the plant becomes leggy and sparse.
Cutting back lavender after flowering stops this from happening by keeping the plant young and productive.
3. It Improves Airflow and Reduces Disease
Removing spent flower spikes opens up the plant and lets air move freely through the foliage.
Good airflow is crucial for lavender because it hates sitting in damp, stagnant conditions.
When you cut back lavender after flowering, you reduce the risk of fungal issues like root rot and powdery mildew.
4. It Tidy’s Up the Garden
Let’s be honest, spent lavender blooms look a bit sad.
They turn brown, go crispy, and drag the whole plant’s appearance down.
Cutting back lavender after flowering keeps your garden looking neat and gives the plant a fresh start.
When to Cut Back Lavender After Flowering
The best time to cut back lavender after flowering is right after the blooms fade, usually in late summer or early autumn.
Here’s how to get the timing right:
1. Wait Until the Flowers Fade
Don’t rush to cut back lavender after flowering while the blooms are still going strong.
Wait until the flower spikes have faded and started to dry out.
This usually happens in late summer for English lavender and a bit earlier for French and Spanish varieties.
2. Avoid Cutting Too Late in the Year
You should cut back lavender after flowering, but you don’t want to do it too close to winter.
Pruning encourages soft new growth, and if that growth appears right before cold weather hits, it can get damaged by frost.
Aim to finish cutting back lavender after flowering at least six weeks before the first expected frost.
3. A Light Second Prune in Spring
You can also give lavender a light tidy in early spring to remove any winter damage.
Just don’t go hard at it, because the main cut back lavender after flowering session should have done the heavy lifting.
4. Skip Pruning in Harsh Winters
If you live in a cold climate, you might want to hold off and only cut back lavender after flowering in milder years.
In freezing regions, it’s often safer to leave the old growth in place over winter to protect the plant.
How to Cut Back Lavender After Flowering
Cutting back lavender after flowering is straightforward, but you need to be careful not to cut into the old woody stems.
Here’s how to do it right:
1. Use Sharp, Clean Shears
Always use sharp, clean pruning shears when you cut back lavender after flowering.
Dull blades crush the stems and make it harder for the plant to heal.
Wipe your shears with rubbing alcohol before and after to prevent spreading disease.
2. Cut Above the Woody Base
The golden rule when you cut back lavender after flowering is to cut into the soft green growth, not the old brown wood.
Aim to remove about one-third of the plant’s overall height.
If you cut into the woody part, the plant may not regrow from there.
3. Shape as You Go
As you cut back lavender after flowering, shape the plant into a nice rounded dome.
Don’t just snip the tops off randomly, because a proper shape lets light reach the whole plant.
This is why cutting back lavender after flowering is as much about form as it is about function.
4. Deadhead Spent Blooms First
If you don’t want to do a full prune, at least deadhead the spent blooms.
Simply snip off the flower spikes as they fade to keep the plant looking tidy and encourage more blooms.
5. Don’t Cut Into Bare Wood
This is the mistake that kills more lavender than anything else.
If you cut back lavender after flowering too aggressively and slice into the leafless woody base, the plant may never recover.
Stay in the leafy zone and you’ll be fine.
So, Should You Cut Back Lavender After Flowering?
You should cut back lavender after flowering, and doing so is one of the simplest ways to keep your plant thriving.
Cutting back lavender after flowering encourages bushy growth, prevents the plant from going woody, improves airflow, and keeps your garden looking sharp.
Just remember to wait until the blooms fade, cut above the woody base, and avoid pruning too late in the season.
Follow these tips and your lavender will reward you with fragrant blooms for many years to come.