Can I top my tree?

Question

We have just purchased a Cupressus Arizonica Fastigiata that is 12ft tall. The garden centre couldn’t really tell us how tall it would get but did say we could top it to keep at the height we want it. We don’t really want it to get much bigger than 20ft. How quickly will it grow and is going to be straightforward to top it at this height?
Thank you.

Answer 1

Online research shows it can grow up to 85 feet tall. Topping a tree is never a good idea. However, cypress trees can be pruned if done correctly.

https://www.gardeningknowhow.com/ornamental/trees/cypress/cutting-back-cypress-trees.htm