By far the most frequently asked question as part of our annual tree sale is "how fast will this tree grow?" Simple enough, yet so complicated.
It would be great if we could say "one to two feet per year." That's what customers want to hear. Five feet per year is even better. The truth is more nuanced. A 'slow growing' tree planted in just the right place can easily outgrow a 'fast growing' tree that is planted in the wrong place. Trees can be finicky about how sunny they like it, how wet they want it, how nutrient rich they need it, how cold they can tolerate, or how salty they will bear.
For example, spruce trees like sunny spots that aren't too wet. Never a very fast growing tree to begin with, if put in the wrong place, they can grow painfully slow. In the photos,15 years ago four 3-foot tall potted Colorado Blue Spruce trees were planted in a row about 25 feet apart. The closest tree in the photo is about 25 feet tall and fairly full. The next is 15 feet tall and not looking too bad. The third is a scraggly 12 feet tall. The fourth is clinging to life and tops out at around 9 feet tall.
All four trees have enough sunlight so that isn't the problem. The best grower is planted in ground that is sandier and about 2 feet higher in elevation than the saddest of the bunch, which is planted in a peaty soil that was once a wetland. From the best to the worst grower, they are planted in progressively wetter areas. The fastest grew 18 inches per year while the slowest grew only 4 inches per year.
This is why when asked "how fast will my tree grow?" we hesitate and then follow with "it depends…" This is also why we include all the information you need to select the right tree for your property as part of our sale. Choose well and your trees will flourish, and if you need a little help, give us a call.
