The best times to scarify a lawn are in spring (typically between March and May) and early autumn (usually September to mid-October), when the grass is growing actively and can recover quickly. Ideally, scarify when the ground temperature is above 10°C, avoiding very hot summer conditions or cold winter months. New or young lawns should not be scarified until they are at least two to three years old to avoid damage to the grass roots. Spring scarifying is usually lighter to remove minor moss or thatch, allowing the lawn a long growing season to recover and strengthen. Autumn scarifying can be deeper to remove heavier thatch or moss and prepare the lawn for winter, ensuring it enters dormancy healthier. Avoid scarifying when the soil is wet or during frosty or very hot periods, as this can damage the lawn. Scarify once or twice a year depending on thatch buildup and lawn condition. Summary:
- Best times: spring (March-May) and early autumn (September-October)
- Soil temperature: above 10°C
- Young lawns: wait 2-3 years
- Avoid very dry, hot, wet, or frosty conditions
- Scarify once or twice yearly as needed
This timing helps promote healthy lawn growth and improves aeration and removal of dead organic matter for a greener, stronger lawn.
