Yes, the Green Thread plant (Thelesperma filifolium), which is often used traditionally for its medicinal properties, can be used to create a tincture. You can use vodka or glycerin as a solvent.
Regarding the process, simply soak the dried plant material in the solvent for 4-6 weeks, shake daily, and then strain.
Meanwhile, I have to bring your attention to the fact that scientific studies are limited in relation to this Greenthread plant at the moment, despite the traditional support for its use considering its potential benefits. Hence, I strongly suggest that you always start with a small dose and consult a healthcare professional for proper guidance.
I included some images of the plant in my response so that you can compare them with your plants to ensure that we are discussing the same plant for proper identification.
