When temperatures drop and the garden looks like it’s gone to sleep, it’s tempting to pack away the watering can until spring.
But according to gardening experts, cutting off water completely during winter could be quietly setting your plants up for failure.
While growth slows and many plants enter dormancy, that doesn’t mean they stop needing water altogether. In fact, dry winter spells combined with cold winds can leave plants dehydrated, weakened and far more vulnerable by the time spring arrives.
‘A common mistake people make is thinking their plants don’t need any water in the winter time,’ says Chris Bonnett, founder of GardeningExpress.co.uk. ‘This often means that come spring, their plants are dehydrated and damaged.’
The key, he explains, isn’t stopping watering entirely; it’s adjusting how and when you do it.
‘The truth is you should be adjusting your watering schedule throughout the seasons, not stopping it altogether,’ he says. ‘Plants do need water even at this time of year and it’s how you water them that will make all the difference.’
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Why winter watering matters
Cold weather doesn’t always mean wet weather. Extended dry spells can cause soil, especially in pots, to dry out far quicker than many gardeners realise. Without enough moisture, roots can struggle, growth can slow further, and plants can become more susceptible to damage once temperatures rise.
Chris adds: ‘Not watering plants during this time of year can cause dehydration, slow their growth, leave plants more vulnerable to damage and weaken them before spring begins.’
When (and when not) to water
Timing is crucial. ‘There are some conditions you should avoid watering in such as freezing temperatures or when there is heavy rain and snow,’ Chris explains. ‘Aim to water them on mild, frost-free days and during dry spells.’
He also advises paying extra attention to pots. ‘Container plants will need watering the most frequently as they lose the most water, even when it’s cold. Plants in the ground and evergreen shrubs can go a little longer but they should still be checked regularly during dry spells.’
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How to water plants safely in winter
Following these simple steps means your garden will be in full bloom by spring.
Understand your plants: Not all plants need the same amount of water. ‘As a general guide, container plants may need watering every one to two weeks, plants in the ground every two to four weeks, and shrubs around every two to three weeks,’ Chris advises.
Check the soil first: Before reaching for the hose, test the soil. Push your finger about an inch into the compost – if it feels dry, it’s time to water. ‘If it’s still moist, leave it a few more days and check again,’ he says.
Choose mild, frost-free days: Watering frozen ground can shock plants and damage roots. Always wait for milder conditions before watering.
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Water early in the day: Chris also says the time you water is incredibly important. ‘Even on mild days, aim to water in the morning so moisture has time to soak in before temperatures drop again overnight.’
Go slow and deep: A slow, thorough soak is far more effective than a quick sprinkle, encouraging stronger, healthier roots.
Mulch for moisture: Chris says, ‘Adding mulch around the base of plants helps lock in moisture and insulates roots from the cold.’
Keep an eye on changes: Weather conditions vary, so be prepared to adjust your routine. ‘Keep an eye on your plants and look out for signs of dehydration such as drooping leaves and brown tips,’ Chris warns.
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