They eat you face off magnificently.
Nature is anything natural. Sand/deserts happen naturally so they are part of druid jurisdiction. Why would would a big part of the Cenarion Circle be in Silithus? Druids are just not hardwood tree experts, many different druid sects(claw/talon/fang/wild) Druid also have power over the wind/thunder so it is not just living things that they control.