Helichrysum angustifolium (curry plant)

I bougth my curry plant from a nursery, last spring. It grew some since, but not a lot. The tag it came with says it grows to 60" tall. On the web I found that it grows to 12-18". I have it now in a small pot and I was planning to transfer it in the garden to accomodate the adult size, but if it's going to be 12" I'd rather keep it in the pot.
Does anybody have any experience with this plant: how big is it going to be?

Thank you.

 

Scroll down for info on this site from New Mexico State University

 

Perhaps the tag should read 60 cm which then would be consistent with the 2' reported on the New Mexico site.

 

Helichrysum angustifolium grows up to 60 cm, may be 70 cm, in my garden .