"Dan J. S." wrote in message
...
What is the average growth of this plant? More than a foot a year? I just
bought some about 18 inches tall. Hoping to double in size in a year. Is
this possible? Thanks!

A foot a year is a lot, expecially from an 18" plant. Arbor Vitae do grow
fast, though. There are lots of varieties, however. There are some that
are spherical, some that are very tall and thin. You need to check on the
specific kind that you bought and change them if they aren't what you want.