Soil texture:
https://commons.wikimedia.org/wiki/File:2008-08-12_Mulch.jpg

Stone texture:
https://commons.wikimedia.org/wiki/File:Galets.jpg

Shrub texture:
https://commons.wikimedia.org/wiki/File:Gew%C3%B6hnlicher_Buchsbaum,_Buxus_sempervirens_.JPG