As you may or may not know, Sun Gro Horticulture is the largest supplier of growing mixes to professional greenhouse and nursery growers across North America. One of the more popular professional growing mixes is Sunshine® Mix #4. It was developed by Sun Gro’s team of horticulturalists based on initial work done by Cornell University in Ithaca, NY. Mix #4 is a blend of peat moss and perlite, and its claim to fame has always been its high air capacity and fast drainage.
Traditionally Black Gold® is chosen by home gardeners for being organically rich, fortified with earth worm castings and overall quality, which all translate into gardening success in the home garden.