Summer in Adelaide always arrives with confidence, but this year it has made its presence felt early and loudly. With a recent heat wave pushing gardens to their limits, many plants are showing signs of stress, lawns are struggling to stay green, and even indoor plants are feeling the shift. While extreme heat can be confronting, a few thoughtful adjustments to your routine can make all the difference and help your garden not just survive, but recover well.
Water Smarter, Not More Often
Watering is, unsurprisingly, the biggest talking point during hot spells. In summer, it’s less about how often you water and more about how well. Deep, infrequent watering encourages roots to grow down into the soil, making plants more resilient when the heat hits. Early morning is the ideal time, allowing moisture to soak in before the sun intensifies and reducing evaporation. Evening watering can be tempting after a long, hot day, but it can leave foliage damp overnight, increasing the risk of fungal issues—particularly during humid periods.
Mulch: Your Garden’s Summer Shield
Mulch becomes your garden’s best friend in summer. A generous layer of organic mulch helps keep soil temperatures down, slows evaporation and improves soil structure over time. In Adelaide’s dry heat, even established plants benefit from this extra insulation. Keep mulch pulled back slightly from plant stems to avoid rot, and top it up as it breaks down.
Protecting Plants During Heatwaves
Plant protection during heat waves is about reducing stress wherever possible. Temporary shade cloth over sensitive plants, especially vegetables, young shrubs and newly planted trees, can prevent leaf scorch and wilting. Pots are especially vulnerable, as they heat up quickly and dry out fast. Grouping pots together or moving them into dappled shade during extreme heat can help regulate temperature and conserve moisture. It’s also worth resisting the urge to fertilise during very hot weather—pushing new growth at this time can weaken plants rather than strengthen them.
Caring for Lawns in Extreme Heat
Lawns often take a beating in summer, particularly in Adelaide where hot northerlies and prolonged high temperatures combine. The key is to raise the mower height. Slightly longer grass shades the soil, reduces water loss and promotes stronger root systems. A deep soak once or twice a week encourages deeper roots and a more resilient lawn. Many lawns will naturally slow their growth or go slightly dormant during heat waves, and that’s okay. Avoid aggressive treatments or renovations until conditions cool down.
Supporting Indoor Plants Through Summer
Indoor plants shouldn’t be overlooked during summer either. While they’re protected from direct sun, indoor environments can become surprisingly harsh, especially with air conditioning running for long periods. Dry air can cause browning leaf tips and increased water loss. Grouping plants together helps create a more humid microclimate, and keeping them away from direct air flow can prevent stress. Watering routines may need adjusting, but it’s still important to check the soil before reaching for the watering can—overwatering remains one of the biggest causes of indoor plant problems.
Observe Now, Plan for the Future
Summer is also a good time to observe rather than overhaul. Notice which areas of your garden struggle most in the heat and which plants thrive with minimal intervention. These observations are invaluable when planning future plantings or considering more heat-tolerant species suited to Adelaide’s climate. Native plants and Mediterranean-style gardens often cope better with extended dry periods and high temperatures, offering beauty without constant maintenance.
Helping Your Garden Bounce Back
As the heat wave passes and temperatures settle, gardens often bounce back more quickly than expected. Leaves firm up, lawns regain colour and growth resumes. With mindful watering, a little protection from the worst of the sun, and a willingness to work with the season rather than against it, your garden can weather an Adelaide summer and be ready to shine again when autumn arrives.
Summer Gardening Is About Resilience
Summer gardening here isn’t about perfection—it’s about care, patience and resilience. Just like us, gardens need a bit of extra kindness when the heat is on.
Ask one of our knowledgeable garden staff members for advice if you have any questions regarding anything having to do with your garden, indoors or out. We would be pleased to lead you on the correct path. Call us on 1300 165 165 or visit your local store.