Rapid development took place in the 1960s. By 1970 the city had a population approaching 7,000 people. To showcase his new community, MacArthur purchased an 80-year-old banyan tree located in nearby Lake Park, that was to be cut down to enlarge a dentist’s office. It cost $30,000 and 1008 hours of manpower to move it. A second banyan was moved the following year. While moving the first banyan tree over the Florida East Coast Railway, the massive tree shifted and disconnected the Western Union telephone and telegraph lines running adjacent to the railroad, cutting off most communications between Miami, 80 miles to the south, and the outside world until the damage could be repaired. These trees still remain at the center of MacArthur Boulevard near Northlake Boulevard and are still featured on the city shield. In January 2007, the great-grandson of impressionist artist Pierre-Auguste Renoir, Alexandre Renoir, presented a painting to the city which depicts the Gardens banyan tree. It is currently on display at the city hall on North Military Trail.

City growth was slow but steady throughout the 1970s and 1980s, as the population has still not reached the predicted 55,000 people envisioned by MacArthur. However, the opening of the 1.3-million-square foot Gardens Mall in 1988 initiated a new wave of development, as did the sell off in 1999 of approximately 5,000 acres (20 km²) in the city by the John D. and Catherine T. MacArthur Foundation. Development of this property happened quickly and led to much new growth in the city. The city adopted an Art In Public Places ordinance in 1989 and has amassed an eclectic collection of works.[4]

The city suffered much damage to its tropical landscaping in the hard freezes of 1985 and 1989, but has experienced no freezing temperatures since then. The city was hit by Hurricane Frances, Hurricane Jeanne, and Hurricane Wilma in 2004 and 2005. Much of the city lost power for days at a time after each storm, and many traffic signals and directional signs in the city were destroyed. Many homes and businesses were severely damaged during the first two storms and contractors and construction materials were at a premium. Hundreds of homes were only nearing final repair when Hurricane Wilma hit the following year damaging or destroying many of those completed or ongoing repairs.

The Professional Golfers’ Association of America has its headquarters in the city. There are 12 golf courses within the city limits, including a course owned by the municipality. Several PGA tournaments have been hosted in Palm Beach Gardens since 1971. The Honda Classic has been held at the PGA National Resort and Spa since 2007 and was held at the Country Club at Mirasol from 2003 to 2006; both are located in Palm Beach Gardens. Ameribank and Wackenhut also have their headquarters in Palm Beach Gardens. The Gardens Mall, PGA Commons, Legacy Place, and Downtown at the Gardens [5] are the center of the city’s retail market. The city has the first and one of only three Paul bakeries in the United States.

The most notable landmark is the Jupiter Inlet Lighthouse, completed in 1860. Made of brick, it was painted red in 1910 due to discoloration caused by humidity. Hurricane Jeanne in 2004 sandblasted the paint from the upper portion of the tower, and the tower was repainted using a potassium silicate mineral coating. The lighthouse is often used as the symbol for Jupiter.