I decided I want to grow Geum Mrs. J Bradshaw and the direcdtions say to direct sow outside in fall.
Does this mean winter sowing??
What type of "soil" is used in those milk jugs?? I have several kinds: Seed starting mix, like Jiffy Start? potting soil? Transplant soil? Container soil? MG garden soil? soil from the final destination flower bed?

That plant needs chillling before it will germinate.
Winter sowing is one way to do it.
Or you could chill it on moist paper towels in a refrigerator.

In jugs, most people use a good potting soil.

I like pro mix for my jugs, been using it for years. I find it holds moisture the best. Sometimes potting soil can be heavy and seed starting mix too light. I personally have never like MG soil too much chunky stuff in it.

I put Miracle Grow Moisture control on the bottom of my container and ProMix on top

I have used "Pro-Mix" soiless mix to good end. I also mix up my own. (Roughly) one part each peat moss, sifted pine bark mulch. And optionally with just a little oyster-shell.