Overwintering Potted Lavender in New England

English lavender (Lavandula angustifolia) is hardy to Zone 5, but container roots are far more vulnerable to freezing than in-ground plants. In New England, a few extra steps ensure survival.

Best Overwintering Strategies

Option 1: Unheated Garage or Shed (Preferred)

• Move pots after a few hard frosts (plants enter dormancy).
• Keep space cold (0–7 °C / 32–45 °F) but not freezing.
• Water once every 3–4 weeks—just enough to prevent desiccation.
• No fertilizer until spring.

Option 2: In-Ground "Heeling In"

• Dig a trench in a protected, well-drained spot.
• Sink pots rim-deep, backfill with soil, mulch heavily with straw.
• This buffers root-zone temperature swings.

Option 3: Deck Protection (If No Indoor Space)

• Group pots together against a south-facing wall.
• Wrap pots with bubble wrap or burlap; mulch over tops with 15 cm straw.
• Shield from north/west winds with a temporary windbreak.

In all cases, avoid warm indoor locations—lavender needs a cold period to break dormancy properly. In spring, gradually reintroduce to full sun and resume watering when new growth appears.