Every spring, I get the itch to fix everything at once: the gutters, the car, the lawn. But scarifying in early spring is like trying to wake a hibernating bear with a vacuum cleaner—it’s just rude. The ground is still cold and the grass hasn’t really woken up yet. You’ll end up yanking out the good stuff along with the debris.
The sweet spot is late spring, when the soil is around 10°C (50°F) and the grass is actively growing. Think of it as the moment after your lawn has had its first proper coffee of the season. It can handle the shock, and it’ll bounce back faster than you can say “where did that moss come from?”