Two states called out their militias over three trees full of honey

In 1839, a poorly surveyed border between Missouri and the Iowa Territory left a narrow strip of land claimed by both sides. Tensions escalated after a Missourian cut down several prized bee trees in the disputed strip and local officials tried to arrest each other over unpaid taxes. Both territories mobilized militia forces, but commanders on the ground agreed a shooting war over honey wasn't worth it, and the dispute was eventually settled by the U.S. Supreme Court instead.

— Wikipedia contributors, Missouri v. Iowa — Border dispute, 1839; resolved by the U.S. Supreme Court