If I was to get a very low yield from one pound of mimosa, could I still get a good yield of jungle spice if I use xylene.

it depends why you got a poor yield in the first place.
if you have poor bark then it doesnt matter what solvent you use, your yield will always be low.

If your bark is good but you didnt do your tek correctly then you need to practise extracting.

what tek did you use?

I didn't us a specific tek because I've been extracting for a long time now I just got a pound of bark that I usually don't get my source was out of stock of the good mimosa. I ended up not get the yield I wa expecting so I was playing on doing a pull with xylene which I have never done before and I was wondering would I get a good jungle yield but it doesn't seem so since you said if the dmt yield was low then the jungle yield would be low, well it's worth a try I guess. I'll post results

You didnt use a specific tek but you used some method. Please expand on your method (a/b or stb, amount liquid, amount of pulls, size of pulls, freeze or evap, was solvent already used before, was mimosa from reputable supplier, etc), otherwise its impossible to give feedback

If was from heavelypro*u*ts and it was premium bark I usually get p/p , did a stb did 3 pulls the first two was with recycled naptha the 3rd was fresh naptha each pull was about 100 ml. I kept all pulls separate in the freezer after about a day only seen lil barely any crystal in one jar the others had nothing but got darker in color so I decided to let it evap to see if anything happens and it's been evaping for about 14 hours. I still got one more naptha pull but ima leave it with the mimosa soup until I get the xylene.