Written by Victoria
English varieties of lavenders are hardy down to zone 5. French and Spanish lavenders can be perennial down to 5a if proper steps to prune the lavender are taken. On average lavender will survive winter here is a look at how to achieve healthy lavender in cold winters.
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Here we include a simple video showing lavender in winter. Toward the end you can see the soft cut and woody cuts described below. For further questions on lavender in winter summit your questions below
Will lavender survive the cold
The short answer is yes lavender will survive winter down to zone 5 if proper precautions are taken. You can increase the odds of lavender surviving winter by picking a cold hardy lavender. For details on lavender temperature tolerance
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Here is a list of popular lavenders and there cold hardiness zones:
Lavender Varieties Cold Hardiness zones Hidcote 5b Grosso 5a Provence 5b Munstead 4a Phenomenal French Hybrid 5b Royal Velvet 6a
What does lavender look like in the cold
Lavender is considered an evergreen. Lavender retains some green texter in colder climates but shades of silver are noticeable. Here is a picture of a Hidcote Lavender in January located in a zone 5a.
Is lavender dormant in the cold
Yes in colder climates lavender go into a dormant state. To protect itself portions of the plant may die off. In the pictures below you can see that portions of the lavender plant exposed to frozen snow has died back. We will go into further details on how to prevent this below.
How to protect lavender plant in winter
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To protect lavender in winter you need to minimize its exposure to freezing temperatures and boggy conditions. Direct exposure to freezing air can kill lavender in some cases. To solve this you can cover the lavender with a frost blanket after the plant goes into dormancy. Make sure not to cover to early in the winter or the added heat from the cover can trick the plant into waking up because it believes it is spring. If you live in an area that receives a lot of snow than you may not need to cover the plants. Many people don’t know the snow is a great insulator and offers a layer of protection several degrees warmer than the outside air. It is also important to make sure lavender does not sit in wet boggy areas. Lavender prefers it to be well draining and dry. Wet conditions can cause root rot. Planting on the side of a hill as pictured here will help keep water from bogging the roots. Lavender trees require more care find out here.
How to prune lavender plants for winter
It is best to avoid pruning lavender in the winter if you live in a zone colder than 7a. Pruning a lavender plant in the winter should only be if necessary. To prune lavender in winter avoid cutting in to the woody base of the stem. Damage to the woody base can lead to Lavender dying even in warm months. If you must prune lavender in winter only cut back the top 1/3 of the plant that is not woody. You can tell the diffrence by looking at the inside of the cut if you see green you are fine. If the interior of the stem is brown stop cutting and move up higher on the stem. Example A shows a green stem Example B is a cut wood base.
Example A:
Example B:
Grow lavender in the cold
- You can grow lavender in the winter by using frost covers in late winter. Spanish lavender is to warm climate to promote growth in winter, but English lavender and French lavender can have growth in winter. We recommend using heavy oil producing English lavender like Hidcote as they are more cold hardy in winter conditions.
- Cover the lavender plants with a frost cloth about 30 days before last frost date to start waking English lavender from its winter sleep. After about a week check the stems and soil of your plant to see if they have thawed. If till frozen add a second frost blanket to increase warmth.
- Take care to mist the plants weekly to keep from drying out winter lacks the humidity to meet the car needs of the plant waking from dormancy.
- Years ago I started taking care to cover my plants in late winter, I saw budding 3 weeks earlier than previous years.
Source: https://t-tees.com
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