The answer to 'types of aeration' is that there are two main types of lawn aeration: core aeration and spike aeration. Core aeration involves using a machine to remove small plugs or 'cores' of soil from the lawn, which helps to alleviate soil compaction and improve water and nutrient absorption. Spike aeration uses solid tines or spikes to punch holes in the soil without removing any plugs. Both methods can be beneficial for lawn health, but core aeration is generally considered more effective for most lawns.
Aeration is an important lawn care task that should be done annually, typically in the fall, to ensure your grass stays healthy and thrives. It's best to hire a professional landscaping service to perform aeration, as they have the right equipment and expertise to do the job properly.