Windmill palms grow at a moderate growth rate, taking up to 50 years to reach their maximum height. They usually grow to about 20 to 40 feet tall with a 12 feet canopy spread. Some palm trees can grow as much as 2 or 3 feet each year, reaching a height of 10 feet in 3 to 4 years, while others can be much slower depending on the species and growing conditions.
