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You divide a lavender plant by lifting it from the soil and gently separating its root ball into smaller sections, each with its own roots and stems.
This simple process lets you turn one healthy lavender plant into several new ones without spending a dime at the nursery.
If you’ve been wondering how to divide a lavender plant, the good news is that it’s one of the easier garden tasks once you know the right timing and technique.
When you divide a lavender plant properly, you rejuvenate the original bush, keep it from getting woody, and multiply your lavender for free.
In this post, we’ll walk through when to divide a lavender plant, the exact steps to divide a lavender plant without killing it, and how to care for your new divisions so they thrive.
Let’s dig in.
Why You Should Divide a Lavender Plant
You should divide a lavender plant for a few really good reasons.
1. It Rejuvenates an Aging Plant
Lavender gets woody and leggy as it ages, and dividing a lavender plant helps reset its growth.
When you divide a lavender plant, you remove some of that old, tired root mass and encourage fresh, vigorous shoots.
This keeps your lavender looking full instead of sparse and sad.
2. It Multiplies Your Plants for Free
Every time you divide a lavender plant, you potentially get two, three, or even more new plants.
Those divisions can fill bare spots in your garden or become gifts for friends who admire your lavender.
It’s an easy, budget-friendly way to expand your lavender collection.
3. It Improves Airflow and Drainage
An overcrowded lavender plant can suffer from poor airflow, which invites fungal issues.
When you divide a lavender plant, you open up the root zone and give each section more room to breathe.
Better drainage and airflow mean healthier plants overall.
When to Divide a Lavender Plant
Timing matters a lot when you divide a lavender plant.
1. Early Spring Is Ideal
The best time to divide a lavender plant is in early spring, just as new growth starts to appear.
At this point, the plant is waking up but hasn’t yet put out lots of tender new stems.
Dividing now gives the roots time to settle before the heat of summer.
2. Early Fall Works Too
In mild climates, you can also divide a lavender plant in early fall.
The soil is still warm, which helps roots establish quickly.
Just make sure you leave enough time before the first frost so the divisions can anchor themselves.
3. Avoid Mid-Summer and Deep Winter
Don’t try to divide a lavender plant during a heatwave or in the dead of winter.
Summer heat stresses the plant, and frozen ground makes digging impossible.
Stick to spring or early fall for the best results.
How to Divide a Lavender Plant Step by Step
Now let’s get into the actual process of how to divide a lavender plant.
1. Water the Plant a Day Before
Give your lavender a good soak the day before you plan to divide a lavender plant.
Moist soil holds together better and is much easier to work with.
Dry, crumbly soil makes the root ball fall apart, which can damage the roots.
2. Dig Around the Root Ball
Use a sharp spade or garden fork to dig in a wide circle around the plant.
Go about six to eight inches out from the base so you don’t slice through the main roots.
Then gently lift the whole plant out of the ground.
3. Shake Off Excess Soil
Once the plant is out, shake or brush off as much soil as you can.
When you divide a lavender plant, you need to see the roots clearly to find natural separation points.
A gentle spray from a hose can help rinse the root ball without damaging it.
4. Separate the Roots
Look for natural clumps in the root ball where the plant has already started to split.
Use your hands to gently pull these apart, or use a sharp, clean knife or pruners if the roots are tightly tangled.
Each division should have a healthy mix of roots and several strong stems.
5. Replant the Divisions Right Away
Plant each division in well-draining soil at the same depth it was growing before.
Space them about 12 to 18 inches apart so they have room to spread.
Water them in gently to settle the soil around the roots.
Tips for Success When You Divide a Lavender Plant
A few extra tips can make all the difference when you divide a lavender plant.
1. Keep the Roots Moist
Don’t let the divisions dry out while you’re working.
Keep them in a bucket of water or cover them with a damp cloth until you replant.
Lavender hates wet feet, but dry roots during transplanting can be just as deadly.
2. Don’t Overwater After Dividing
Once your divisions are in the ground, water them well once, then back off.
Lavender is drought-tolerant and hates soggy soil, so let the top inch dry out between waterings.
Overwatering is the fastest way to rot your new plants.
3. Give Them Plenty of Sun
Lavender needs at least six to eight hours of full sun.
After you divide a lavender plant, place the new divisions in a spot that gets plenty of direct light.
Shade will make them leggy and weak.
So, How Do You Divide a Lavender Plant?
You divide a lavender plant by digging up the root ball, separating it into smaller sections, and replanting each piece in well-draining soil with plenty of sun.
The best time to divide a lavender plant is early spring or early fall, when the weather is mild and the plant is actively growing.
With a little patience and the right timing, you’ll turn one lavender bush into several healthy, thriving plants.
So go ahead and divide a lavender plant this season, and enjoy a garden filled with fragrant blooms for years to come.