The woody inner core of the plant is a leftover after the bast fibre from the stalk is extracted. But this timber-like leftover is a highly potential material that is used to make:
Engineered Wood & Composites
Construction Blocks
Animal Bedding
Bio-Plastics
Presumably, this segment of the harvest is left as waste and incinerated as stubble, contributing to ecological problems. However, the same leftover possesses potential unmatched within the realm of natural materials.
Better moisture regulation
Without blending with any harmful toxins
Material than conventional concrete