What To Know
- Add a layer of mulch or straw over the burlap or frost cloth to further insulate the plants.
- If the leaves of your lavender plants turn brown and dry, it could be a sign of winter burn.
- Fertilize lavender lightly in late summer or early fall with a balanced fertilizer low in nitrogen.
Lavender, with its enchanting purple blooms and soothing aroma, adds a touch of beauty and tranquility to any garden. However, when winter’s icy grip approaches, ensuring the survival of these delicate plants becomes paramount. In this comprehensive guide, we delve into the secrets of how to keep lavender plant over winter, ensuring their vibrant presence graces your garden for years to come.
Choosing the Right Variety
The first step in winterizing lavender is selecting varieties that are hardy in your climate. Some popular cold-tolerant varieties include:
- Lavandula angustifolia ‘Hidcote’
- Lavandula angustifolia ‘Munstead’
- Lavandula x intermedia ‘Grosso’
Preparing Lavender for Winter
Before winter’s arrival, it’s essential to prepare your lavender plants for the challenges ahead:
1. Prune Lightly
In late summer or early fall, trim back the lavender plants by about one-third. This encourages bushier growth and helps prevent snow and ice from weighing down the stems.
2. Mulch Around the Base
Spread a layer of mulch, such as shredded bark or compost, around the base of the plants. This insulates the roots and protects them from freezing temperatures.
3. Fertilize Lightly
Apply a balanced fertilizer with low nitrogen content to provide essential nutrients for winter survival. Avoid over-fertilizing, as this can promote excessive growth that is susceptible to frost damage.
Overwintering Lavender
Depending on your climate, you have two main options for overwintering lavender:
1. Outdoor Protection
In mild climates, lavender can be kept outdoors over winter with proper protection:
- Create a Frame: Build a frame around the plants using chicken wire or stakes and cover it with burlap or frost cloth.
- Provide Insulation: Add a layer of mulch or straw over the burlap or frost cloth to further insulate the plants.
- Monitor Temperature: Check the temperature regularly and remove the cover when temperatures rise above freezing.
2. Indoor Overwintering
In colder climates, it’s best to overwinter lavender indoors:
- Bring Indoors: Dig up the lavender plants before the first hard frost and pot them in well-draining soil.
- Provide Light: Place the plants in a bright, sunny location or under grow lights.
- Water Sparingly: Allow the soil to dry out slightly between waterings.
- Prune: Trim back the plants lightly if they become leggy.
Spring Care
Once spring arrives, it’s time to revive your lavender plants:
1. Remove Protection
If you have been protecting your lavender outdoors, gradually remove the cover as temperatures warm.
2. Fertilize
Apply a balanced fertilizer to encourage new growth.
3. Water Regularly
Water the plants regularly, especially during hot, dry weather.
4. Divide and Replant
If your lavender plants have become overgrown, divide them and replant them in the spring.
Troubleshooting Winter Damage
Despite your best efforts, winter damage can sometimes occur. Here’s how to address common issues:
1. Brown Leaves
If the leaves of your lavender plants turn brown and dry, it could be a sign of winter burn. Prune away the damaged leaves and provide additional protection next winter.
2. Rotting Roots
If the roots of your lavender plants rot, it’s likely due to overwatering or poor drainage. Replant the plants in well-draining soil and avoid overwatering.
3. Pest Damage
Lavender plants can be susceptible to pests such as aphids and mealybugs during winter. Inspect the plants regularly and treat any infestations promptly.
Frequently Asked Questions
1. Can I cut back lavender in the fall?
Yes, you can lightly prune lavender in late summer or early fall to encourage bushier growth and prevent snow damage.
2. Should I water lavender over winter?
Water lavender sparingly during winter, only when the soil is dry to the touch. Overwatering can lead to root rot.
3. How often should I fertilize lavender over winter?
Fertilize lavender lightly in late summer or early fall with a balanced fertilizer low in nitrogen. Avoid over-fertilizing.
