Curious about cutting the cost of my hobbies, I thought it would be fun to look into potentially growing and processing my own fibercraft materials. I'm a bit limited in terms of available space, and also what I can reasonably pull off with tools from the dollar store- which already narrows it down nicely to working with plant fibers, and narrows it further still to plants I can reasonably grow sustainably in central Virginia. ergo: this list is incomplete and I strongly reccommend doing your own research (like, from academic papers, and don't go asking chatGPT. Just running a search for 'plant fibers' on archive.org should be good to start) if you'd like a broader, non-hobbyist angle on the subject.
Points with insufficient info will be marked with a (!).
Common in my area, to a degree. Holds value to dirt fishers, since if you see yucca out in the middle of the woods, that generally means there used to be a house there. Produces a twine (though the qualities vary from species to species).
Bear with me here for a second. There's a guy who lives somewhere around here who converted his entire lawn into a banana orchard. My mom got a plant from him, and so there's a banana plant growing in the backyard as we speak. The fibers are harvested from the pseudo-stems of a mature plant and produce a "silk" which is somewhat similar to linen. May be a good choice for the hotter months (another big factor into this research- the south is too damn warm for wool most of the time).