An expandable tree protection device covers an area surrounding a tree trunkandprovides for expansion to accommodate growth of the tree trunk over time. Thedeviceincludes a tray comprising a top wall and a perimeter wall coupled to andextendingaround a peripheral edge of the top wall. The tray has an aperture extendingthrough thetop wall for receiving a tree trunk therethrough. Each of a plurality ofpanels is slidablycoupled to the top wall extend into the aperture covering an associatedportion of theaperture. A respective interior edge of each panel is slidable outwardly awayfrom acenter of the aperture for expansion exposing a larger area of the aperture asthe tree trunkgrows.