Why So Many Acorns This Year? Mast Cycles Explained

A Long Island homeowner reports an unprecedented acorn drop—"like a lawn of acorns." The cause is natural mast cycling, not a tree health issue.

Mast Year Dynamics

Oaks produce heavy acorn crops every 2–5 years (often every third year).
Acorns take two years to mature: a spring frost during pollination can wipe out a crop two years later.
Favorable spring weather and low insect pressure lead to bumper crops.

This is a normal ecological phenomenon. Rake or mow acorns if desired; they pose no threat to the tree. Next year's crop will likely be light.

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