How To Separate Lavender Plants

Separating lavender plants is the process of dividing an established lavender bush into smaller sections so you get more plants from one.
 
If you’ve been wondering how to separate lavender plants without killing them, you’re in the right place.
 
Learning how to separate lavender plants correctly means knowing when to do it, how to dig them up, and how to replant each section so it thrives.
 
In this post, we’ll walk through why you should separate lavender plants, the best time to do it, and the steps to separate lavender plants safely.
 

Why You Should Separate Lavender Plants

Separating lavender plants keeps them healthy, and here’s why it matters:

1. It Rejuvenates Older Plants

When you separate lavender plants that have been in the ground for years, you give them a fresh start.
 
Lavender gets woody and leggy over time, but dividing it encourages new growth from the outer edges.
 
That’s why gardeners who separate lavender plants regularly end up with bushier, more productive shrubs.
 

2. It Prevents Crowding

Lavender needs good airflow, and when plants grow too close together, they compete for nutrients and water.
 
If you separate lavender plants that are overcrowded, you reduce the risk of fungal diseases like root rot.
 
So when you separate lavender, each section gets the space it needs to spread its roots.
 

3. It’s a Cheap Way to Get More Plants

Instead of buying new lavender, you can separate lavender plants you already have.
 
Each healthy division becomes its own plant, which means free lavender for your garden or pots.
 
That’s a big reason so many people learn how to separate lavender plants in the first place.
 

When to Separate Lavender Plants

The best time to separate lavender plants is in early spring or early fall.
 
If you separate lavender in the heat of summer, the stress can kill the divisions before they root.
 
And if you separate lavender too late in fall, the new roots won’t have time to establish before frost.
 
Early spring works well because the plant is waking up, and early fall gives roots time to settle before winter.
 
Avoid trying to separate lavender plants while they’re in full bloom, since the plant is using all its energy on flowers.
 

How to Separate Lavender Plants Step by Step

Here’s how to separate lavender plants without damaging them:

1. Water the Plant a Day Before

Before you separate lavender plants, give the shrub a deep watering the day before.
 
Moist soil holds together better, which makes it easier to lift the root ball when you separate lavender.
 
Dry soil crumbles away and exposes roots, so watering first is a small step that makes a big difference.
 

2. Dig Around the Root Ball

Use a sharp spade to dig a circle around the plant, about 6 to 8 inches from the base.
 
Push the spade underneath and lift the whole root ball out gently when you separate lavender plants.
 
Shake off loose soil so you can actually see the roots before you separate lavender into sections.
 

3. Divide the Root Ball

Now for the main event: you need to separate lavender into smaller pieces.
 
Look for natural splits in the root ball, and use your hands or two garden forks back to back to pry it apart.
 
If the roots are tough, a clean, sharp knife works well to separate lavender plants without tearing them.
 
Each division should have a good chunk of roots and several healthy stems.
 

4. Trim the Tops

After you separate lavender plants, trim back the top growth by about a third.
 
This balances things out because the smaller root system can’t support as much foliage right away.
 
Trimming also helps the plant focus energy on settling in rather than supporting too many leaves.
 

5. Replant Right Away

When you separate lavender plants, replant each division as soon as possible.
 
Dig a hole twice as wide as the roots and set the plant at the same depth it was growing before.
 
Water thoroughly, and keep the soil slightly moist for the first couple of weeks after you separate lavender.
 

6. Give Them the Right Conditions

Lavender loves full sun and well-drained soil, so pick a spot that gets at least six hours of sunlight.
 
If your soil is heavy clay, mix in sand or grit before you separate lavender plants into it.
 
Good drainage matters more than rich soil, since soggy roots are the fastest way to lose a division.
 

So, How Do You Separate Lavender Plants?

You separate lavender plants by digging up the root ball, dividing it into sections with healthy roots and stems, and replanting each piece in full sun with well-drained soil.
 
The best time to separate lavender plants is early spring or early fall, when the weather is mild and the plant isn’t blooming.
 
Water the plant beforehand, trim the tops after dividing, and keep the new plants lightly watered until they settle.
 
Once you know how to separate lavender plants, you can multiply your lavender for free and keep older bushes healthy for years.
 
So go ahead and separate lavender plants this season, and enjoy a garden full of fresh, fragrant lavender.