Jungle Grass Seeds

Jungle Grass Seeds can be placed on Mud Blocks to grow jungle grass and make an artificial Underground Jungle. This grass will only spread when placed below 0ft. Like a natural Underground Jungle, an artificial jungle will become inhabited with Hornets and Man Eaters. It is possible to find rare items such as Nature's Gift and Cobalt Armor in a player-made jungle.

Although some believe that Jungle Grass Seeds can drop rarely in the Underground Jungle, the only confirmed way to get them is as a rare drop from the Skeletron boss.