Very cool yuccas. I know you explained before how to get your filamentosas to trunk but I can't find that post. I want to get some of mine to do the same.

Hi Wes,
I did several different things, some worked - some did not and some things worked for a while. Basically find the largest plant you have, twist-pull or cut all the suckers from around the base, pull the dead leaves off and then only keep the spears that you want to keep on the trunk. I try to keep the highest spears on the trunk I can find. keep a couple growing at a time, always make sure the one you keep is a growing spear, I tried to keep forcing one spear to keep growing and after some flowers they stopped growing and died and no other spears budded out. 🙁 So I have a lot to learn. trial and error
P.S. if you cut a bud off the plant, it will heal very fast. 🙂