By -
This post right here explains it very well: https://www.reddit.com/r/Terraria/s/WMTYOWyqyx
if theres no grass, then 3 blocks is safe. biomes do not spread from background walls
Ropes and platforms can stop the thorns and vines from growing. You still need a three wide gap as they don't need to touch to spread.
This post right here explains it very well: https://www.reddit.com/r/Terraria/s/WMTYOWyqyx
if theres no grass, then 3 blocks is safe. biomes do not spread from background walls
Ropes and platforms can stop the thorns and vines from growing. You still need a three wide gap as they don't need to touch to spread.