When temperatures soar, it’s not just people who feel the effects – your garden does too. Extended periods of hot, dry weather can put lawns, plants, shrubs, and trees under significant stress, leaving them wilted, discoloured, or even permanently damaged if they’re not cared for properly.
The good news is that a few simple steps can help your garden stay healthy throughout a heatwave! Here’s our expert advice on protecting your outdoor space during the hottest days of the year.
1. Water Wisely
One of the biggest mistakes people make during a heatwave is watering little and often. Instead, aim to give your plants a deep soak a few times a week. This encourages roots to grow deeper into the soil, making plants more resilient to dry conditions.
The best times to water are:
- Early morning (before the sun gets too strong)
- Late evening (after temperatures have dropped)
Avoid watering during the middle of the day, as much of the water will evaporate before it reaches the roots.
2. Don’t Panic About Brown Lawns
If your lawn starts turning brown, don’t assume it’s dead. Most established lawns naturally go dormant during prolonged dry spells and will usually recover once cooler, wetter weather returns.
Unless your lawn is newly laid, it’s often better to let nature take its course rather than using large amounts of water trying to keep it green.
3. Add Mulch Around Plants
Applying a layer of mulch around flower beds, shrubs, and trees helps retain moisture in the soil and keeps the roots cooler.
Organic mulches such as bark, compost, or well-rotted manure can also improve soil quality over time while reducing weed growth.
Aim for a layer around 5–8cm thick, taking care not to pile mulch directly against plant stems.
4. Hold Off on Fertilising
Plants under heat stress are already working hard to survive. Applying fertiliser during extremely hot weather can encourage new growth that the plant struggles to support, and in some cases may even scorch the roots.
Wait until temperatures return to normal before feeding your plants.
5. Protect Pots and Containers
Container plants dry out much faster than those growing in the ground. Move pots into partial shade where possible, group them together to create a more humid environment, and check them daily. During particularly hot weather, containers may need watering once or even twice a day.
6. Delay Major Pruning
Heavy pruning during a heatwave exposes fresh growth and can place unnecessary stress on plants. Instead, simply remove dead flowers or damaged stems and leave more substantial pruning until cooler conditions return.
7. Keep an Eye on Newly Planted Trees and Shrubs
New plants have smaller root systems and are far more vulnerable to drought than established ones.
Check the soil regularly and water deeply whenever the top few centimetres become dry. Tree watering bags or slow-release watering systems can also be a worthwhile investment during prolonged hot weather.
8. Leave Wildlife Some Water
Heatwaves affect wildlife as much as gardens. Leaving out a shallow dish of fresh water can make a huge difference for birds, bees, hedgehogs, and other beneficial creatures.
Adding a few small stones allows insects to drink safely without drowning.
9. Weed Regularly
Weeds compete with your plants for valuable moisture and nutrients. Removing them promptly ensures more water is available for the plants you actually want to grow. Regular light weeding is much easier than tackling large overgrown areas later.
10. Know When to Ask for Help
Keeping a garden healthy during a prolonged heatwave can be challenging, especially if you’re away on holiday or have a larger outdoor space to maintain.
Professional garden maintenance can help ensure your plants receive the right care at the right time, preventing costly damage and keeping your garden looking its best throughout the summer.
Final Thoughts
Hot weather doesn’t have to spell disaster for your garden. By watering correctly, protecting the soil, avoiding unnecessary stress on plants, and focusing on long-term health rather than short-term appearance, your garden will be much better equipped to cope with even the hottest spells.
If you’re looking for expert help keeping your garden healthy throughout the summer, our experienced garden maintenance team is here to help. Whether you need regular maintenance, lawn care, hedge trimming, or seasonal garden advice, we’d be delighted to help your outdoor space thrive – whatever the weather! Get in touch with our team to get started.