care of Lavendula stoechas

This is one of my least favourite plants of all time! It rots off so fast for me and never really delivered for me as the pictures of it suggest. But I take my hat off to someone who can get it this far......... Well done. But one of my 'failures'

P.S. I can't seem to grow daffodils either!!

Have you dead-headed it? What kills them is winter wet, so let's hope there's not too much cold rain. I just trim mine in the spring. They are in the sunniest, driest places in my garden - they definitely are challenging but rewarding plants.