But when the acorns are green and dropping early, it indicates the tree is under some kind of weather-related stress. ... If your trees are shedding acorns prematurely it's a sign that they are focusing their energy on other things rather than seed production.

Why are so many acorns falling this year 2021?

Late spring freezes, extremely high temperatures, summer droughts and other weather stresses can reduce acorn pollination and production. Third, predation by seed-eaters like squirrels, deer, turkey and even weevil larvae can greatly reduce the number of viable acorns.

What does a lot of acorns falling mean?

According to folklore, another popular sign of winter is the abundance of acorns in the fall and the observation of squirrels activity.