palms typically will take a year or so to grow to full size because of the type of photosynthesis they use… they are so open to loosing so much water in the florida heat that they have to capture the suns photons during the day, and complete photosynthesis during the night time… since they can only preform this process at half the time, it generally takes them twice as long to grow. make sure they have enough water so that their growth doesn’t get stunted )