So far, in the various WS gardening sites I've checked out, I've only seen one person saying that Promix Ultimate worked well for them when they did winter sowing. Has anyone else had success using this particular potting soil for winter sowing? ( My main concern is that the Promix package says the mix contains 'water saving gel'--and since I've read numerous times that 'moisture control' Miracle Gro SHOULDN'T be used for WS, I'm wondering if that is the same ingredient that would make Promix Ultimate also unsuitable for winter sowing?)
