Plant growing medium

摘要

A plant growing medium has a fabricated fibrous product having a density below 4.5 pcf, and preferably below 3.0 pcf, as a root supporting structure. The product comprises a pack of fibers, the fibers having a three-dimensional orientation and at least some of the fibers being glass fibers, and binder binding the fibers to each other at substantially every place of fiber-to-fiber contact.