Source : Webster's Revised Unabridged Dictionary (1913)

Shrubbery \Shrub"ber*y\, n.; pl. {Shrubberies}.
   1. A collection of shrubs.

   2. A place where shrubs are planted. --Macaulay.

Source : WordNet®

shrubbery
     n 1: an area where a number of shrubs are planted
     2: a collection of shrubs growing together