Spring or Fall

 

Both spring and fall are ideal times to aerate cool season turf grass, such as Kentucky bluegrass and perennial ryegrass. In most cases, spring aeration is performed between March and May, depending on location, turf grass species, and intensity of use.

 

Spring aeration is said to be more effective due to the fact that the soil has been loosened by the winter freeze/thaw cycles.  This allows for easier penetration for the aerator.

 

Fall aeration is done in late summer and early fall, usually between August and November. Aeration before, or at the time of late season fertilization enhances root growth responses and improves spring green-up and growth.

 

Fall is the time when plants are growing their root zones to prepare for the winter months.  Aeration opens up the root zone and promotes new growth.  This helps the lawn throughout the winter months and prepares is for the spring growing season.

 

Either season will promote root growth and relieve compaction.  When combined with a fertilizer and water the turf will “spring” to life.  In areas where turf is thin aeration will thicken and improve the overall quality of turf.