1 Liter is fine.
You can actually take cuttings, poke them through floating styrofoam, and put them under a cardboard box with a light on 12/12 for 2 weeks. No need for a full on grow, as long as you have the light leaks taken care of. A healthy cut will show sex and root before dying, even in plain water. Change the water daily.
try to exposed then to Ethylene gas for a while (Apple & Banana peelings in a jar) to flip male seeds to female (I don't know if that works but it's worth a shot). You can still get high from them so.... no harm done really.
You waste those bits of firey hotness on a mere shirt, when you can melt a pit in a priceless record instead?? You Savage!!Seedless weed? How in hell are you going to burn holes in your shirts without snap crackle pop?