Gardeners are being urged to avoid watering their plants during the hottest part of the day this week, as experts warn it could do more harm than good. With warm weather continuing across much of the UK, it may seem sensible to reach for the watering can when temperatures peak.
Why Midday Watering Is Ineffective
However, the Royal Horticultural Society (RHS) says watering at midday is one of the least effective times, as much of the moisture evaporates before it can soak into the soil. Instead, gardeners are advised to water early in the morning, giving plants the best chance to absorb moisture before temperatures begin to rise.
Evening Watering Risks
Although watering in the evening is another option, the gardening charity warns that leaving plants damp overnight can encourage fungal diseases and attract pests. It adds: "Evening watering is acceptable, but damp leaves overnight can encourage pests and fungal diseases."
Deep Soaking Recommended
Rather than watering little and often, gardeners are also encouraged to give plants a deep soak before allowing the surface of the soil to dry out. This helps roots grow deeper into the ground, making plants better able to cope during dry spells.
The advice is particularly important for plants growing in containers and hanging baskets, which dry out much faster than those planted in the ground. Gardeners should check the compost regularly and only water when it feels dry a few centimetres below the surface.
Water at the Base
The RHS also recommends applying water directly to the base of plants instead of soaking the leaves, helping reduce the risk of disease while making sure moisture reaches the roots where it is needed most.
For trees, shrubs and garden borders, regular watering is rarely necessary unless there is prolonged drought. Instead, gardeners should look for signs of stress, such as drooping leaves, before deciding whether plants need more water.
