Rockwool
December 28, 2022 2022-12-28 15:06A soilless growing medium made from volcanic rock and limestone that has been heated to over 2900 degrees F. is then squeezed out and molded into cubes, blocks and slabs.
« Back to Glossary IndexA soilless growing medium made from volcanic rock and limestone that has been heated to over 2900 degrees F. is then squeezed out and molded into cubes, blocks and slabs.
« Back to Glossary Index