How fast does a sycamore tree grow? What size will a 20 year old tree be?
Certified GKH Gardening Expert
These are very fast growing in most areas, even growing as much as six feet in a single year. They can live longer than 100 years in many cases, so they can tend to get very large. They can reach about 30 feet by that time in areas where it is invasive. and will reach anywhere from sixty to over 100 feet tall when fully mature.