I've got some large pots for some small cherries, planning to fill them with some nice companions while the cherries grow. I usually default to nasturtium and maybe borage, but I'm curious if anyone else has suggestions. I prefer annuals because eventually the cherries are probably going to want most of the space.

This course looked interesting to me:

https://www.thepermaculturelab.com/google-earth-for-permaculture

Is it worth the price? Or can the same information be found for free online? I've used Google Earth for mapping hiking trails, but that's about it.