The wild mustard is growing yellow and everywhere in Israel at the moment. But not the kind of mustard that you eat with ketchup on your hotdog! Wild mustard as in wild mustard plants! :) I am talking about Sinapsis Arvensis , a tiny yellow flower that grows in masses in fields, along road sides and abandoned building sites. Up close the wild mustard flower does not look like much - a bit on the puny side actually. But just come across a field filled with mustard flowers and you will be enchanted - just as I am every spring.