In most Stratas, the yard is common property, meaning that all the Owners, as a group, own the grounds. Exceptions are some townhouse Stratas where portions of the yard are designated on the Strata Plan as PT (Part of the Strata Lot) or as LCP (Limited Common Property) set aside for the exclusive use of a particular strata lot. You do, however, have exclusive use of any fenced areas that access your unit. You are responsible for keeping your exclusive use area clean and tidy of garbage and debris, and possibly for mowing the grass. The Bylaws will outline whose responsibility it is to tend to the gardening of the townhouse units.