Wiktionary
fiber plant
n. a plant species cultivated because its fibers have artisanal and/or industrial uses, e.g. as raw material for fabrics. Before the advent of synthetics, textile manufacturing depended almost exclusively on wool, silk and fiber plants such as cotton and flax.
Usage examples of "fiber plant".
Once Pacific peoples spread beyond the range of wool-yielding domestic animals and fiber plant crops and hence of woven clothing, they became dependent on pounded bark “.
Hinc the Weaver munched throughtfully on a fiber plant as he walked.