Celebrate Arbor Day at Tree City, U.S.A! The City of Palm Beach Gardens and the Woman's Club of Palm Beach Gardens are celebrating at Honor Park at Lake Catherine (9481 MacArthur Boulevard) on Friday, January 17 at 9:30 a.m. Every year, we celebrate Arbor Day by planting a new tree at Honor Park. Join us in 2025 as we plant a cannonball tree, Couroupita Guianensis. See you there!