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Pruning overgrown lavender is essential for keeping the plant healthy, vibrant, and full of blooms.
If you’ve let your lavender get a bit wild and woody, learning how to prune overgrown lavender properly is the best way to bring it back to life.
Without a good prune, overgrown lavender can become leggy, produce fewer flowers, and even split apart in the middle.
The good news is that pruning overgrown lavender is a straightforward task, as long as you do it at the right time and with the right technique.
In this post, we’ll cover exactly how to prune overgrown lavender, when to do it, and the common mistakes you need to avoid.
Let’s dive into the world of lavender care and get your plant looking its best again.
Why You Need to Prune Overgrown Lavender
Pruning overgrown lavender isn’t just about making it look tidy, it’s about the long-term survival of the plant.
When lavender gets overgrown, it often means you’ve missed a few seasons of regular trimming.
This leads to woody stems at the base, with new green growth only at the tips of the branches.
If you leave it alone, the woody parts will eventually stop producing any new shoots, and the plant will look scraggly and die out in the center.
That’s why you need to prune overgrown lavender to encourage fresh, healthy growth from the base and keep the plant compact and productive.
Here’s what pruning overgrown lavender does for your plant:
1. It Encourages New Growth
When you prune overgrown lavender, you’re essentially telling the plant to push out new shoots from the lower parts of the stems.
This rejuvenates the plant and prevents it from becoming all wood and no leaves.
A harsh prune of overgrown lavender will stimulate dormant buds near the base, which is exactly what you want.
These new shoots will be vigorous and healthy, creating a fuller, more attractive shrub.
So, pruning overgrown lavender is the most reliable way to get that fresh, dense growth back.
2. It Boosts Flower Production
Lavender flowers on new growth from the current season.
If your lavender is overgrown and mostly woody, there simply isn’t enough new growth to support a good show of blooms.
By pruning overgrown lavender hard, you force the plant to produce lots of new stems, which will all be capable of flowering.
So, if you want a massive flush of fragrant purple flowers, you have to prune overgrown lavender first.
It’s a trade-off, you sacrifice this year’s early blooms for a stronger, more floriferous plant later in the season.
3. It Improves Air Circulation
Overgrown lavender is often dense and tangled, which traps moisture and reduces airflow.
This creates the perfect environment for fungal diseases like root rot and leaf spot.
When you prune overgrown lavender, you open up the center of the plant, allowing air to flow freely.
This keeps the foliage dry and healthy, reducing the risk of disease.
Pruning overgrown lavender is a key part of keeping your whole garden healthier, not just the lavender itself.
When Is the Best Time to Prune Overgrown Lavender?
Timing is everything when it comes to pruning overgrown lavender.
If you prune at the wrong time, you could kill the plant, so it’s worth getting this right.
The best time to prune overgrown lavender is in early spring, just as you see new green growth starting to emerge at the base of the plant.
This is typically around March or April, depending on your climate.
Pruning overgrown lavender in early spring gives the plant the entire growing season to recover and produce new wood.
Avoid pruning overgrown lavender in late fall or winter, as this leaves the fresh cuts exposed to frost, which can damage the plant.
Also, avoid pruning overgrown lavender in the heat of midsummer, as the stress of heavy pruning combined with high temperatures can be too much.
So, mark your calendar for early spring, and that’s your window for pruning overgrown lavender.
Step-by-Step Guide: How to Prune Overgrown Lavender
Now, let’s get into the actual process of pruning overgrown lavender.
Follow these steps carefully, and you’ll be amazed at how well your lavender bounces back.
Step 1: Gather Your Tools and Check the Plant
For pruning overgrown lavender, you’ll need a sharp pair of pruning shears or secateurs.
Make sure they’re clean and sharp to make clean cuts that heal quickly.
Before you start, take a good look at your lavender and identify the woody parts versus the green parts.
Your goal is to remove the old, woody stems while leaving a little bit of green growth at the base.
On severely overgrown lavender, there may be very little green left, so you’ll have to make a judgment call.
Generally, you can prune overgrown lavender back to about 6 to 12 inches from the ground, depending on how large it is.
Step 2: Cut Back the Woody Stems
Now, start pruning overgrown lavender by cutting the stems down to the desired height.
Make your cuts just above a pair of small green shoots or leaf nodes if you can find them.
If the plant is too woody and has no green leaves, you’ll have to cut into the wood itself.
Don’t panic if you see bare wood, lavender is resilient, but it’s a bit of a gamble.
Just cut each stem evenly, shaping the plant into a nice, rounded mound.
As you’re pruning overgrown lavender, step back occasionally to check the overall shape and ensure you’re not leaving it lopsided.
Step 3: Remove Dead and Weak Growth
After you’ve made the main cuts, it’s time to clean up the inside of the plant.
Remove any completely dead branches that snap easily, as well as any thin, spindly stems that are unlikely to produce strong new growth.
This is an important part of pruning overgrown lavender because it reduces clutter and focuses the plant’s energy on the healthiest parts.
Thin out the center of the plant if it’s too congested, which improves air circulation and light penetration.
This thorough cleanup is what separates a good prune from a great one.
Step 4: Feed and Water the Plant
Once you’ve finished pruning overgrown lavender, it’s time to help it recover.
Give the plant a good drink of water, but don’t overwater, as lavender hates soggy roots.
You can also apply a slow-release organic fertilizer to give the new growth a boost.
Spread a thin layer of mulch around the base, but keep it away from the stems to prevent rot.
This post-prune care is critical for helping your lavender bounce back after such a heavy cut.
What If Your Lavender Is Too Far Gone?
Sometimes, pruning overgrown lavender isn’t enough because the plant has become entirely woody with very little viable green growth.
If that’s the case, you have two options.
First, you can try a hard renovation prune, cutting all stems down to 2 to 3 inches from the ground.
This is the most extreme way to prune overgrown lavender, and there’s no guarantee it will survive.
However, if the roots are healthy, you might get lucky and see a flush of new growth in a few weeks.
Your second option is to replace the plant.
If you find that pruning overgrown lavender leaves you with nothing but dead sticks, it’s often better to dig it up and plant a fresh one.
And here’s a tip, take cuttings from the healthiest parts of the old plant before you remove it, so you can propagate a new lavender for free.
So, How Do You Prune Overgrown Lavender?
Pruning overgrown lavender is best done by cutting it back hard in early spring to remove woody growth and encourage new shoots.
This process is essential for keeping the plant compact, healthy, and full of flowers.
While it’s a risky operation on very old plants, most established lavender will respond beautifully to this yearly reset.
Just remember to use sharp tools, cut above a bud or leaf pair, and avoid pruning overgrown lavender in the winter months.
With this guide, you now know how to prune overgrown lavender with confidence.
All that’s left is to grab your shears and give your lavender the hard love it needs.
Your plant will thank you with lush green growth and an abundance of fragrant blooms.
Happy pruning, and enjoy your revitalized lavender!