@Epic Gardening Epic Gardening: Perlite, Rockwool, Coco Peat, Growstones…Which Should You Use and Why? December 20, 2013
@Gary Pilarchik Gary Pilarchik: For New Gardeners: What is Perlite, Peat Moss, Vermiculite and Seed Starting Mix – MFG 2014 December 13, 2013
@Gary Pilarchik Gary Pilarchik: How to Make Your Own Seed Starting Mix and Potting Mix: Save 75% – The Rusted Garden 2014 December 1, 2013