How to care for trees in late summer

Late summer provides the perfect time to give your trees and shrubs some extra care to ensure they’re in top shape for the autumn season.

1. Watering: Keep the Moisture Levels Just Right

• Why It Matters: In late summer, the hottest days are likely behind us. However, it’s still important to keep your trees and shrubs well-hydrated. Dry spells can still occur, and trees need consistent moisture to stay healthy.

• How To Do It: Water your trees deeply and less frequently, focusing on the root zone rather than the leaves. It’s better to give them a thorough soak once or twice a week than a light sprinkle every day. For young or newly planted trees, check the soil moisture regularly and adjust watering as needed.

2. Mulching: Protect and Nourish Your Soil

• Why It Matters: Mulching in late summer helps retain soil moisture, suppresses weeds, and provides a protective barrier against temperature fluctuations as the season changes.

• How To Do It: Apply a fresh layer of organic mulch around the base of your trees and shrubs, about 2-3 inches thick. Make sure to keep the mulch a few inches away from the trunk to prevent rot. This will keep the soil cool and moist, and as the mulch breaks down, it will add valuable nutrients to the soil.

3. Checking for Pests and Diseases: Catch Problems Early

• Why It Matters: Late summer is a time when pests and diseases can become more prevalent, especially as plants become stressed from the summer heat. Catching issues early can prevent them from spreading and causing more damage.

• How To Do It: Regularly inspect your trees and shrubs for signs of pests or disease. Look for discoloured leaves, unusual spots, wilting, or visible insects. If you spot any issues, act quickly - prune away affected areas, and consider using organic pest controls or fungicides if necessary. It’s also a good idea to clear away any fallen leaves or debris that could harbour pests or diseases.

4. Pruning: Give Your Trees a Healthy Shape

• Why It Matters: Pruning in late summer can help shape your trees and remove any dead or damaged branches, which could pose a risk during autumn storms.

• How To Do It: Focus on removing any dead, diseased, or crossing branches that could cause damage or impede growth. For flowering shrubs, be careful to prune after they’ve finished blooming to avoid cutting off next year’s flower buds.

5. Fertilising: Give Your Trees a Nutrient Boost

• Why It Matters: As the growing season slows down, a dose of fertiliser can provide your trees and shrubs with the nutrients they need to strengthen their roots and prepare for the coming autumn.

• How To Do It: Apply a balanced, slow-release fertiliser around the base of your trees and shrubs. This will provide a steady supply of nutrients that will support root development and overall health as they prepare for dormancy.

Getting Ready for Autumn:

• Healthy Growth: Proper late-summer care ensures your trees and shrubs have the strength they need to thrive through autumn and winter.

• Preventative Care: Addressing potential issues like pests and diseases now can save you trouble down the line.

• Long-Term Benefits: A well-maintained garden in late summer sets the stage for a beautiful and healthy landscape in the months to come.

By utilising these tips in late summer, you'll help your trees and shrubs transition smoothly into autumn, keeping them strong and vibrant for the season ahead.