I have a 17 year-old Laurus nobilis in a 5 gallon clay pot. I plant it in the garden every April. I re-pot it after a few frosts in autumn and overwinter it in an unheated greenhouse. Had scale when it was young. I scraped every one off with my fingernail and burnt them in the woodstove. Haven't had any problems since.
Thank you for the article. It is a very worthwhile plant to grow.