Of, or relating to art of topiaries. / Of a tree or shrub, trimmed in artistic shape.

(uncountable) Art or practice of trimming shrubs or trees in artistic or ornamental shapes, e.g. of animals. / (countable) A garden decorated with such art. / (countable) One such shrub or tree.

plural of topiary

(of plants) Trimmed in artistic or ornamental (topiary) shapes.