Ex Nihilo (Minecraft) Wiki

A silkworm

Silkworms are special items in the Ex Nihilo mod added by v1.04. They are used to produce String on limited resources maps (primarily Skyblock).

String is necessary for crafting Silk Mesh.

A partially colonized tree

Infested leaves drop string


Silkworms cannot be crafted. The only way to obtain a silkworm is through using a Crook to break Leaves.


Infesting Leaves

If you right click on leaves while holding a silkworm, the leaves block becomes infested. The infestation will gradually spread to adjacent leaves blocks, eventually infesting any adjacent leaves blocks. The infested leaves can then be broken with a Crook to receive string and silkworms, making this a renewable process. Infested leaves will not drop apples or saplings.

As Food

Cooking silkworms in a furnace results in cooked silkworms, which restore 2 points of hunger with low saturation.


Silkworms can be composted in either cooked or raw form by using them on a Barrel. Each silkworm contributes 4% to the total amount necessary.


Version Change
v1.05 Fixed textures of infested leaves
v1.06 Fixed bug of infested leaves uninfesting
v1.15 (The Great Seed Update)
  • Silkworms can now be cooked and eaten
  • Silkworms can be composted, both raw or cooked.
v1.16 Infested leaves nerfed (drops less string now)
  • Infested Leaves are much more efficient and no longer cause a lot of lag
  • Infested Leaves are now actual leaves so Tinker's Construct tools can break them
  • Infested Leaves now decay as regular leaves do