Torchberry Plants can be found scattered throughout the Caves and Hollow Hills of Twilight Forest. They are a naturally occurring source of light, outputting less light than a Torch. When broken, Torchberry Plants drop Torchberries, which can be used to create Torches.
If struck by Shears, Torchberry Plants will drop a Torchberry Plant item you can then place yourself. Torchberry Plants can only be attached to the bottom of blocks.
Torchberry Plants are a welcome sight for adventurers, as not only do they provide light directly, they allow for easy creation of more torches to keep the darkness at bay.