the buxus was looking great! have you sorted it out? hope it hasnt died, it was starting to get there, i hope all is well, it was good to see the tree so healthy then reading that it started going brown and losing leaves is a worry.
over watering, underwatering, a super hot day, or even to cold could have all been reasons. need some more info champ.
J.
taking the top half of trees of since 2005! 
