Generally speaking, shrubs are
woody plants that have a multiple stem growth habit
that often emerges straight from the root system.
They tend to be shorter than most single stemmed
woody plants we call trees.
Again, there are many exceptions
to these rules. Some viburnums have a single, very
short stem at their base before branching out into
the shrub form. Magnolias and lilacs are sometimes
trained to grow in a tree form.
Our index of commonly grown
contains many of those used in the home landscape in
the temperate regions of North America.