With temperatures soaring, gardeners are seeking advice on how to keep their plants alive without wasting water. Experts recommend watering in the early morning or late evening when the soil is cooler and water is less likely to evaporate.
Leigh Hunt of the Royal Horticultural Society advises using a watering can instead of a hose, as it gives better control over water usage. A hose uses roughly five times more water than a watering can for the same result. If a hose is necessary, fit a sprinkler attachment to mimic natural rain and direct water to the base of the plant.
Lawns and established plants in the ground rarely need watering, even in a heatwave, says Hunt. Pots, however, may require daily watering. Check soil moisture by inserting two fingers up to the knuckle; if dry, give a deep soak rather than frequent light watering, which encourages shallow roots.
Collecting rainwater is an efficient and free method. Use a water butt or a rainwater diverter kit. Grey water from washing vegetables or bathwater can also be used for ornamental plants, but should be used within 24 hours to avoid bacterial growth.
Pots benefit from saucers to catch runoff, and grouping plants together can create a microclimate that reduces water loss. Mulching with organic matter helps retain soil moisture. With these strategies, gardeners can help their plants thrive while conserving water during a heatwave.
