topiary adj.

1590s, from Latin topiarius "of or pertaining to ornamental gardening," as a noun, "ornamental gardening, landscape gardening," also "an ornamental gardener," from topia "ornamental gardening," from Greek topia, plural of topion, originally "a field," diminutive of topos "place" (see topos). The noun is first recorded 1906, from the adjective.