Porous mineral fibre plant growth blocks etc. - with radiation-reflective protective layer on the sides to prevent light penetration into the root system

摘要

A water-absorbent porous prod. for growing plants is made from a water absorbent mineral fibre material, the upper side having one or more pits in which to place plant seeds, and at least the edges of the material being covered with a protective layer which has a layer of radiation-reflective material.