Dethatching your lawn should ideally coincide with peak growth times for your grass type. For cool-season grasses, this would be in late summer or early fall. For warm-season grasses, late spring or summer would be the best time. It's crucial to avoid dethatching when the grass is dormant to ensure healthy regrowth.

The timing for dethatching a yard can vary based on the type of grass and its growth cycle. Generally, it's recommended to dethatch once a year or every two years. However, if your lawn doesn't have significant thatch buildup, you could go longer without dethatching. It's always best to check the condition of your lawn and adjust accordingly.

Lawn thatchers, also known as dethatchers, use sharp, rotating tines to cut through the layer of thatch — the dead grass and plant material that builds up on your lawn over time. This process helps to break up and remove the thatch, allowing water, nutrients and air to reach the soil more efficiently, which promotes healthier and more vigorous grass growth. After the dethatching process, the removed thatch is typically raked up and removed from the lawn.