means the practice of altering the visible features of an outdoor area — planting, grading, hardscaping — to make it more attractive or functional.

from From "landscape," which arrived in English around 1600 from the Dutch "landschap" — a painter's term for a depicted stretch of scenery, made of "land" plus "-schap" (a cousin of English "-ship," meaning condition or quality). So the word first meant a picture of land before it meant the land itself; later still it grew the verb "to landscape," and "landscaping" — the act of arranging real ground as if composing a painting you can walk through.