Overwinter potted plants in the UK properly and you’ll save money, protect tender plants and enjoy stronger growth next spring. Winter weather can be harsh, but with the right care your container plants can survive cold temperatures.
This guide explains which plants need protection, how to move them safely and the best overwintering methods for British gardens.
What does overwintering mean?
Overwintering means protecting plants through winter so they survive frost, cold winds and reduced sunlight.
Which potted plants need overwintering?
- Tender perennials
- Citrus trees
- Chilli plants
- Geraniums (pelargoniums)
- Herbs like basil
When should you protect plants?
Start preparing when night temperatures drop below 5°C. Don’t wait for the first frost.
How to overwinter potted plants
Move indoors
Place tender plants in:
- Conservatories
- Bright windowsills
- Greenhouses
Reduce watering
Plants need less water in winter. Overwatering causes root rot.
Prune lightly
Trim dead growth to prevent disease.
Improve drainage
Raise pots on feet to stop waterlogging.
Wrap pots
Use:
- Bubble wrap
- Hessian
- Fleece
Plants that should stay outside
- Hardy shrubs
- Evergreens
- Lavender
Common overwintering mistakes
- Bringing plants in too early
- Overwatering
- Poor ventilation
- Placing near radiators
How to check plant health
- Inspect leaves weekly
- Check for pests
- Remove yellowing growth
FAQ
Can I leave pots in a shed?
Yes, if it stays above freezing and has light.
Should I feed plants in winter?
No – wait until spring.
Can I overwinter hanging baskets?
Yes, move them indoors or shelter them.
Related guides
Helpful resources
Suggested tags: overwintering, winter gardening, container plants
Suggested category: Gardening
