Weed

The Weed is a possible product of IndustrialCraft 2 Crop Breeding. It will automatically take over unoccupied Cropsticks, spreading to take over and kill nearby Crops, and creating Tall Grass on nearby dirt and farmland (turning the blocks into Grass). Weeds can be harvested with a Weeding Trowel, but are only useful for making Bio Chaff.

As a warning, Stage 5 Venomilia Crops and Crops with very high Growth stats (24 and up) will also spread Weeds around themselves.