Can't help with ID, but I've often seen farmland around volcanoes, the fertility is attributed to volcanic ash.

Almost certainly a seedling from the nearby trees, whatever those are..... Alpine firs?

Maybe Tsuga mertensiana?

tj

You need a better camera. One with a Telescopic lens. :-)

One little conifer on the top of volcano, we should've known you'd find it. lol

Various junipers and Piñon pines would love it in there.

This lava bed was one of the trickiest surfaces I’ve ever walked on. Uneven, sharply jagged, and numerous fissures combined with my not-so-great balance was cause for pause. I think that solitary conifer is a pine, but I can’t say for certain. Piñon Pine sounds good to me.