Howdy again all. It's been kind of crazy around here so I haven't been as active on the thread as I would like to be. Everything is going well with my little trees. The plums would really like to be outside, but there is still a freeze danger so no dice for them. The little mulberrry has a sibling that popped up about a week ago and I need to separate them. And the cottonwoods and the red oak are outside just waiting for the weather to stay consistent so they can green up.
I read that mulberry seeds need a 60 to 100 day stratification (
http://homeguides.sfgate.com/germinate-mulberry-trees-24620.html). I started mine inside the house during the winter, so I left them in the refrigerator for 90 days before I planted them and that seemed to work out pretty well.