Terraria Wiki
Terraria Wiki

Hallowed Grass Wall is a type of wall. Like the grass of the Hallow, it has a notable hue of cyan and often features small flowers. On the Desktop version Desktop version and Mobile version Mobile version, it is sold by the Dryad during a Blood Moon. In all other versions, it can be destroyed, but not harvested, making it unobtainable as an item.

Hallowed Grass Wall cannot be created by the player on the Console version Console version, Old-gen console version Old-gen console version, and 3DS3DS version version the way most other walls can, but it can be converted from Grass Wall, Flower Wall, and Jungle Wall (both natural ones and those bought from the Dryad) by using Blue Solution sprayed with the Clentaminator. As the Clentaminator affects a rather large area, creating areas of localized Hallowed Grass Walls without converting blocks and other wall parts may be difficult.

Hallowed Grass Walls can spread The Hallow to nearby pure walls. See Biome spread for further information.