Plant Fibre is a crafting material that can be obtained by breaking vines, destroying jungle plants and sometimes drops from Farming other plants (like cotton).
Plant Fibre usally comes in this form (as vines in caverns).
Plant Fibre can be found in caves, taking the apperance as vines. These vines can also range from different colours, but does not change the colour of the Plant Fibre item itself. In desert biomes, Plant Fibre sometimes takes the form of bushes and shrubs on the ground.
Plant Fibre can be crafted into Fabric, which is used to make Clothes in the Yarn Spinner and Bandages, which restore health and can be compared to Red Stim Pack
It is also made up of celucose. Plants are important to all kind of creatures.
Vines can come in many different appearance variants, Each planet has its own different set of vines.