Terraria – How to halt the spread of corruption after winning hell

terraria

After defeating the Wall of Flesh, corruption is spreading much faster and bypasses sunflowers. Are there any other methods of halting it than hallowing?

Best Answer

I believe a Hallowed Biome will prevent them from spreading. These can be created by planting Hallowed Seeds, which are gained by smashing a Demon Altar with a PwnHammer.

Edit: I've discovered I was mistaken about how to get Hallowed Seeds. You don't directly get them from the Demon Altar, but instead buy them from the Dryad after smashing the altar.