Small tree (5)
(Other definitions for shrub that I've seen before include "Cordial" , "Mixed drink of rum, sugar, fruit-juice and spice" , "Myrtle or Rosemary, say" , "Plant - brush (anag)" , "Elder" .)
(Other definitions for juniper that I've seen before include "Shrub flavouring gin" , "kind of berries" , "Coniferous shrub with berries used to make gin" , "Shrub providing flavour for gin" , "Its cones are used to flavour gin" .)