What happens to the pith as a plant matures?

As a plant matures, the pith, which is the central part of the stem, tends to dry out and can lead to the formation of a hollow stem. This process occurs as the plant develops and the tissues become more specialized. The pith is largely made up of soft, spongy parenchyma cells that help in storage and transport of nutrients and water when the plant is younger. However, as the plant grows older and the vascular cambium becomes more active in producing secondary xylem (wood) and phloem, the pith may lose its vitality, dry out, and consequently create a hollow space within the stem. This transformation is common in many species and can serve various functions, including reducing weight or enhancing the structural integrity of the plant.