How does Italo Calvino use imagery in The Baron in the Trees?

Example of Imagery:

"There were the brown boughs of cherry, the tender quince, peach, almond or young pear, the big plumb, and sorb apples and carobs too, with an occasional mulberry or knobby walnut. Where the orchards ended, the olive groves began—silvery gray, a cloud tufted out halfway up the hillsides..."