How do I prepare lavender for winter?
Written by
Kiana Okafor
Reviewed by
Prof. Charles Hartman, Ph.D.Preparing lavender for winter involves striking a balance between protection and its natural dormancy, cold-hardy varieties actually like the winter chill. Too much protection will do more damage than good. I discovered this when I lost plants that were smothered under too much mulch. Use these methods for lush growth in spring.
In-Ground Plants
- Mulch with gravel not organic matter for drainage
- Prune lightly removing only spent flower stems
- Avoid nitrogen fertilizers after midsummer
- Install windbreaks for exposed locations
Potted Lavender
- Wrap pots in burlap or bubble wrap
- Elevate containers on feet for drainage
- Group plants against sheltered walls
- Water monthly during dry winters
Timing your pruning is key to surviving winter;- Everett M. Lineberger: Pruning trimming such as fall is never ok for woody stems. Only garden flower spikes in fall after they are done blooming. Major shaping is saved for spring. I found not pruning in fall would help my plants recover better. New growth only comes from green stems.
The right mulch prevents crown rot. Organic mulches hold too much moisture against the stems of plants. Gravel or crushed stone provides perfect drainage. I spread two inches of gravel around the base of perennial plants. The gravel not only allows excess moisture to drain but also reflects the winter sun into the plant.
Potted lavender does require some special care. You should move them near the south-facing walls. It's helpful to group potted lavender for insulation. When conditions are dry, potted lavender should receive water at least once a month. I lost a few to the winter drought before I recognized the need for occasional watering.
Please do not bring your hardy lavender indoors, as its winter dormancy is crucial to its flowering cycles. Plants that are forced indoors become leggy and weak. My experience did not end well, and I ultimately suffered from a pest infestation. Alternatively, use temporary covers during frigid temperatures, specifically when the temperature is below 10°F (-12°C).
During spring assessment of winter injury, wait until active growth to remove dead wood. A little patience goes a long way, as some plants may take longer to recover. My lavender has new shoots emerging from what appears to be a lifeless crown. Good winter etiquette will promote a good spring revival.
Read the full article: How to Grow Lavender From Seed Successfully
