> And female cicadas also damage trees directly by slicing into twigs to lay their eggs. Although these two types of damage rarely kill trees, the effect is enough to reset the clocks of trees such as oaks, which typically undergo “mast years” in which they produce large batches of acorns every few years in synchrony. After accumulating damage during a cicada emergence, these trees produce lean harvests for two autumns in a row and then a feastlike burst of nuts two-and-a-half years after a cicada emergence, Lill says.
That's wild.