growing season

Hi all, new to bonsai and hoping for some help. I live in Denver, CO (recently moved here, so this will be my first fall/winter here), and am wondering if I can plant some seeds now and if they will survive the colder weather. I know they are supposed to be kept outside, but I am curious if they...

Here’s a general conversation starter for this evening: What’s your favorite tree when it comes to an abundance of growth/branching/ramification/taper/root flare options during a single growing season? I’m not talking about shortcuts or looking for something that grows fast (and dies fast), so...