B Horizon the B horizon is the subsoil.sub.subsoil is made up mostly of clay, small pieces of weathered rocks and minerals. the B horizon gets its nutrients from horizon A then horizon C gets all its nutrients from B. (hopefully leaching will not occur or all the plants will die.) —Preceding unsigned comment added by 71.54.182.62 (talk) 22:57, 4 March 2010 (UTC)
