We have a carob tree in the front yard, must have been there for 15 to 20 years. Well in the last few days it has finally started to produce flowers! 
 
Unfortunately, after a bit of reseach it seems that it is only producing male flowers 

 . Some are monoecious, others are dioecious by the look of it, seems I got a dioecious male tree! 
bugger.....
Nev