Does Lavender Need Protecting From Frost

Lavender does need protecting from frost, especially if you’re growing English lavender (Lavandula angustifolia) or any of the more tender varieties.
 
Frost can damage lavender plants, particularly when temperatures drop below 20°F (-6°C) for extended periods.
 
While some lavender varieties are more cold-hardy than others, most will struggle without some form of winter protection.
 
If you’ve been wondering whether your lavender needs protecting from frost, the short answer is yes, and it’s better to be safe than sorry.
 
In this post, we’ll explore why lavender needs frost protection, which varieties are most vulnerable, and the best ways to shield your plants from winter damage.
 
Let’s get your lavender through the cold months safe and sound.
 

Why Lavender Needs Protecting From Frost

Lavender needs protecting from frost for several important reasons, and understanding these will help you take the right steps.
 

1. Lavender Is Native to Warmer Climates

Lavender originates from the Mediterranean region, where winters are mild and frost is rare.
 
This means the plant hasn’t evolved to handle harsh freezing temperatures the way some other perennials have.
 
When you grow lavender in colder climates, you’re essentially asking it to survive conditions it wasn’t built for.

 

2. Frost Damages Plant Cells

When temperatures drop below freezing, ice crystals can form inside the plant’s cells.
 
These ice crystals puncture cell walls, causing damage that shows up as blackened, mushy foliage.
 
In severe cases, frost can kill the entire plant, especially if it’s a young or tender variety.
 
That’s why protecting lavender from frost isn’t just about keeping it looking nice—it’s about survival.
 

3. Wet Cold Is Worse Than Dry Cold

Lavender hates wet feet, and winter moisture combined with cold is a recipe for root rot.
 
When frost hits damp soil, the roots can freeze and rot, killing the plant from the ground up.
 
This is why protecting lavender from frost also means making sure it has excellent drainage.
 

4. Younger Plants Are More Vulnerable

Mature lavender plants have a better chance of surviving frost than young ones.
 
Seedlings and recently planted lavender don’t have the established root systems needed to withstand freezing temperatures.
 
If you’ve planted lavender this year, protecting it from frost should be a top priority.
 

Which Lavender Varieties Need the Most Protection

Not all lavender is created equal when it comes to cold tolerance.
 

1. English Lavender (Lavandula Angustifolia)

English lavender is the most cold-hardy, surviving temperatures down to about -20°F (-29°C) in some cases.
 
Varieties like ‘Munstead’ and ‘Hidcote’ are particularly tough.
 
Still, even English lavender benefits from some frost protection in extreme cold.
 

2. French and Spanish Lavender

French lavender (Lavandula stoechas) and Spanish lavender (Lavandula dentata) are much more tender.
 
These varieties need protecting from frost in most climates and often can’t survive temperatures below 20°F (-6°C).
 
If you’re growing these, you’ll definitely need to take action before winter arrives.
 

3. Lavandins (Lavandula x Intermedia)

Lavandins fall somewhere in between.
 
They’re more cold-hardy than French lavender but less tough than English varieties.
 
Protecting lavender from frost is still a good idea if you’re growing lavandins in zones 5 or 6.
 

How to Protect Lavender From Frost

Now that you know lavender needs protecting from frost, here’s how to actually do it.
 

1. Mulch Around the Base

A layer of mulch insulates the soil and protects roots from freezing.
 
Use materials like straw, pine needles, or gravel.
 
Avoid heavy mulches that trap moisture against the plant’s crown, as this can cause rot.
 

2. Cover Plants With Frost Cloth

On especially cold nights, drape frost cloth or burlap over your lavender.
 
This creates a barrier that traps warmth and keeps frost from settling directly on the foliage.
 
Remove the cover during the day so the plant can breathe.
 

3. Improve Drainage Before Winter

Good drainage is one of the best ways of protecting lavender from frost.
 
Plant lavender on a slope or in raised beds where water won’t pool.
 
If your soil is heavy clay, amend it with sand or gravel to improve drainage.
 

4. Avoid Pruning in Late Fall

Don’t prune lavender in late fall, as this encourages new growth that’s vulnerable to frost.
 
Instead, wait until early spring to shape your plants.
 
Leaving the old growth intact provides natural insulation.
 

So, Does Lavender Need Protecting From Frost?

 
Lavender definitely needs protecting from frost, especially in colder climates and for more tender varieties.
 
Without protection, frost can damage foliage, kill roots, and even destroy entire plants.
 
By mulching, covering, and ensuring good drainage, you can help your lavender survive winter and thrive again in spring.
 
So if you want your lavender to come back year after year, protecting lavender from frost is a step you simply can’t skip.