I can get 6-7" out of mine in year 1 followed by increasing amounts in every year after. In year 5 with fairly optimum conditions, you should be getting 12-15"+. Should have a ~3.5'+ tree. That's for C. libani var. stenocoma and I would expect the other species to have a similar growth rate. Once in the ground, it becomes one of my fastest growing conifers...24" one year.

Thank you for your response. These are two of the fastest-growing cedrus seedlings until now. After three months and a half they measure almost 4". When does the growing season ends?

Trasplanted

I like to see a terminal bud forming by the 1st week of September.