Gardening expert warns of common watering mistake that’s killing your plants

Man watering garden with a sprinkler hose
(Image credit: Shutterstock)

Now that warmer temperatures are upon us, we’re not the only ones who will be feeling the heat. Our lush lawns and plants are also parched from the heat wave, and when there are no signs of rain anytime soon, it’s not uncommon for us to increase our watering routine.

Besides knowing the best time to water your lawn, you’ll also need to know how to water your yard the right way. In fact, this can make all the difference in maintaining healthy growth. What’s more, you could be wasting water (and effort) — literally pouring money down the drain.

A gardening expert has warned of this one common watering habit we often make when watering our yards. In fact, you could be inadvertently killing your plants instead.

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So before you unreel your hose or set your sprinklers, don’t make this common mistake this summer.

Don't just water the surface of the soil

Watering plants outdoors with watering can

Watering plants outdoors with watering can (Image credit: Shutterstock)

According to experts, it’s not the amount of water that will make your plants thrive during summer — it’s how you water. Most often, we only sprinkle the top layer of the soil and do not allow the roots to get a proper ‘drink’.

“One of the most common mistakes I see is frequent shallow watering,” states Noah Mabey, senior gardener at Thornbridge Hall and Horticultural Advisor to Platinum Spas.

“A quick sprinkle may dampen the surface of the soil, but it rarely reaches the roots where plants actually need moisture. In hot weather, much of that water can simply evaporate before it has any real benefit.”

A quick sprinkle may dampen the surface of the soil, but it rarely reaches the roots where plants actually need moisture.

Noah Mabey, gardener at Thornbridge Hall

So what’s the best method to water our yard and ensure it’s getting the right amount of hydration? “Instead, gardeners should focus on watering deeply and thoroughly at the base of the plant. The aim is always to get moisture down to the root zone.

“This encourages roots to grow deeper into the soil, creating stronger and more resilient plants that are better equipped to cope with dry periods.”

Additionally, experts suggest that your lawn soil should be moist 5 to 6 inches beneath the surface — however, deep watering extends this to 7 to 8 inches deep. The idea behind deep watering is to encourage deep root growth, which keeps the roots cooler and stronger, protecting your lawn during heat stress.

For more top tips on watering your lawn, check out how to water a thirsty lawn in a heatwave — lawn experts reveal all.

Avoid watering little and often

Man watering lawn

Man watering lawn (Image credit: Shutterstock)

Similarly, gardeners often fall into the trap of watering little and often during the hot summer months. However, this habit can literally kill your plants, causing the roots to stay near the surface, where they are prone to drying out rapidly.

“Watering little and often can actually create weaker plants because the roots remain close to the surface where they dry out more quickly,” adds Mabey. “By watering deeply and consistently, you'll use water more efficiently while encouraging healthier growth.

“For containers and newly planted specimens, it's particularly important to monitor moisture levels during warm weather, as they can dry out much faster than established plants growing in the ground.”

So it’s always best to water your lawn and plants deeply and evenly during a heatwave. If you’re in doubt as to whether you’re giving your grass too much water, check out how often you should water your lawn in a heatwave.

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Cynthia Lawrence
Content Editor, Homes

As the Homes Content Editor, Cynthia Lawrence covers all things homes, interior decorating, and garden-related. She has a wealth of editorial experience testing the latest, ‘must-have’ home appliances, writing buying guides and the handy ‘how to’ features. 


Her work has been published in various titles including, T3, Top Ten Reviews, Ideal Home, Real Homes, Livingetc. and House Beautiful, amongst many.


With a rather unhealthy obsession for all things homes and interiors, she also has an interior design blog for style inspiration and savvy storage solutions (get rid of that clutter!). When she’s not testing cool products, she’ll be searching online for more decor ideas to spruce up her family home or looking for a great bargain!


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