It's possible to aerate almost any time. That said, the timing determine whether it helps. The goal is simple: hit it when the turf can recover. For fescue, bluegrass, and rye, the window is late summer into fall — with spring as the backup window. https://mapleprimes.com/users/hopering6 As your source for lawn care products, we help make timing the job clear and simple. The following covers timing. http://ezproxy.cityu.edu.hk/login?url=https://thelawnprofessor.com/product/11-11-11 Why Fall Wins The fall window lines up several factors at once. The ground is still warm, the air has cooled, and precipitation tend to be reliable. Weed pressure falls off sharply. And best of all, any seed you put down enjoys a long stretch to root in prior to the first hard freeze. Aeration at that point simply work better. Whether you want a fall pass or a spring one, our team make it easy. Plan Your Timing Looking to schedule your lawn? Whether you need aeration alone or with seed, the right team make it easy to get it right. Reach out to us to learn more to plan the right approach.