Thank you all for the comments.
Indeed the fragrance is great at night, and still pretty nice during the day... Yesterday I moved the plant to water it, and the smell was all over me !!!
@ Nenella : the spike on my plant started to develop last year in september, a few millimeter then stoped growing until july this year !!! I hope yours will go faster than mine :goodluck:

Nice blooms! Nice find at a garden store :biggrin: