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Lavender should be covered in winter if you live in a cold climate where temperatures drop below freezing.
This is especially true for lavender growing in pots or in areas with harsh winters and wet soil.
But covering lavender in winter isn’t always necessary, and in some cases, it can actually do more harm than good.
If you’ve been wondering whether you should cover lavender in winter, the answer depends on your climate, the type of lavender you grow, and how you’ve planted it.
In this post, we’ll explore when and how to cover lavender in winter, why some lavender plants need protection, and the mistakes to avoid so your lavender comes back strong in spring.
Why Lavender Should Be Covered in Winter
Lavender should be covered in winter for a few important reasons.
1. Lavender Struggles in Wet, Cold Conditions
Lavender is native to the dry, rocky hillsides of the Mediterranean.
That means it loves hot, dry summers and mild, dry winters.
When winter brings freezing temperatures combined with heavy rain or snow, lavender roots can rot quickly.
Covering lavender in winter helps keep excess moisture off the plant and protects the roots from sitting in soggy soil.
2. Cold Winds Can Damage Lavender Foliage
Lavender is fairly hardy, but prolonged exposure to freezing winds can dry out its evergreen foliage.
The plant loses moisture through its leaves during winter, and frozen ground makes it hard for the roots to replace that moisture.
A cover acts like a windbreak, shielding the lavender from drying out and turning brown.
3. Pots Freeze Faster Than the Ground
If you grow lavender in containers, covering lavender in winter becomes even more important.
Pot-grown lavender doesn’t have the insulation of the earth around its roots.
The soil in pots freezes solid much faster, and the roots can die from the cold.
Covering lavender in pots helps insulate the root ball and gives the plant a better chance of surviving until spring.
When You Shouldn’t Cover Lavender in Winter
Not every lavender plant needs to be covered in winter, and covering lavender when it’s not necessary can cause problems.
1. Hardy Lavender Varieties Can Handle Cold Better
English lavender varieties like ‘Hidcote’ and ‘Munstead’ are hardy down to USDA zone 5 in some cases.
If you grow these tough varieties in well-drained soil, they may not need covering at all.
2. Covering Too Early Traps Heat and Moisture
If you cover lavender in winter before the plant goes dormant, you can trap warmth and moisture around the plant.
This encourages fungal diseases and can cause the lavender to rot before winter even sets in.
Wait until the ground freezes and the plant is fully dormant before you cover lavender in winter.
3. Poor Airflow Under Covers Causes Mold
Using plastic or tightly wrapped covers can suffocate lavender.
Lavender needs airflow even in winter, and a cover that traps moisture will do more harm than good.
If you’re going to cover lavender in winter, choose breathable materials like burlap or straw.
How to Cover Lavender in Winter the Right Way
If you’ve decided your lavender should be covered in winter, here’s how to do it properly.
1. Use Breathable Materials Like Burlap or Straw
Burlap wraps and straw mulch are the best options for covering lavender in winter.
They allow air to circulate while still protecting the plant from wind and extreme cold.
Avoid plastic sheeting or anything that seals in moisture.
2. Mulch Around the Base, Not on Top
When you cover lavender in winter, focus on the roots, not the foliage.
A layer of straw or gravel mulch around the base insulates the roots without smothering the plant.
Don’t pile mulch directly on the crown of the lavender, as this can cause rot.
3. Wait Until After the First Hard Freeze
Timing matters when you cover lavender in winter.
Wait until the ground has frozen and the plant has gone dormant.
Covering lavender too early can trick the plant into thinking it’s still growing season, which weakens it.
4. Remove Covers in Early Spring
Once the worst of winter has passed, uncover your lavender.
Leaving covers on too long can trap heat and moisture as temperatures rise, leading to rot.
Remove covers once you see new growth starting in spring.
So, Should Lavender Be Covered in Winter?
Lavender should be covered in winter if you live in a cold climate with freezing temperatures and wet conditions.
Covering lavender helps protect it from root rot, wind damage, and freezing temperatures, especially for potted plants.
But if you grow hardy lavender varieties in well-drained soil, covering lavender in winter may not be necessary at all.
Just remember to use breathable materials, wait until the plant is dormant, and remove covers in early spring.
With the right care, your lavender will survive winter and reward you with fragrant blooms year after year.