This is an alien from the far east which has colonised parts of both Malta and Gozo. Looking just like a yellow version of our Butterfly bush (Buddleja davidii) but with velvety leaves, it is also known as Smoke Bush in the United States. It is an invasive weed in several parts of the world.

Wall in Mgarr, Gozo, 22nd March 2005

Added on Jan 6th 2005, updated 4th Nov 2008, corrected after wrong id B x weyeriana 12th Aug 2009, updated 5th March 2010