Corruption

Corruption is formed when the Corruptor has been summoned. Corruption is placed wherever the Corruptor walks.

Corruption consumes dirt, grass and trees and spreads quite slowly / medium. It kills all flora as they can't live without dirt.

Trivia

 * As corruption cosumes all natural blocks (dirt, leaves and logs), it's best to summon the Corruptor on an island that isn't your main landmass of playing.