Where I can get Jasmine Plant in Brussels?
I'd be very surprised if you couldn't find one at a large Brico, one of the ones with a garden section. Not knowing which part of Brussels you are living makes it difficult for me (or others) to help with independent shops.
Here's the link for their store locator:
http://www.brico.be/wabs/fr/magasin-bricolage/index.do