How to Protect Garden Plants from Frost

Frost can damage tender leaves, flowers and roots, but a little preparation will help your plants through cold winter weather.

Move vulnerable plants

Bring tender container plants into a greenhouse, conservatory, porch or frost-free shed. If this is not possible, position them beside a sheltered wall and group the pots together for additional protection.

Use horticultural fleece

Cover vulnerable plants with horticultural fleece when frost is forecast. Secure it gently without crushing the foliage and remove or loosen it during milder periods so air can circulate.

Tender plants such as tree ferns and bananas may require thicker insulation around their crowns and stems.

Protect plant roots

Plants in containers are more vulnerable because their roots have less insulation than those growing in the ground. Wrap pots with insulating material and raise them onto pot feet to improve drainage.

A layer of mulch around established border plants can also help protect the roots from sudden temperature changes.

Water carefully

Plants still require water during winter, particularly those beneath cover. Check the compost occasionally and water only when needed.

Avoid watering immediately before a hard frost, and never leave containers standing in water.

Watch the forecast

Keep an eye on local weather forecasts and protect plants before temperatures fall. Remember that low-lying areas and exposed gardens may experience colder conditions.