Not throwing it away. I wet the leaves and sticks a bit, to put a jump on the decomposition, then put a trash bag over it and finally the lid. Pot leaves are the best stuff around for compost because you know already it's what the plant needs. I reuse the soil for all the unused exudates left in it from the previous round. It's too bad the percentage of nutrients in the green stuff isn't very high.
I have this bin that I keep used soil in. I will add some dried additives like fish meal, Azomite, Dolemite lime, etc. And I keep.it pretty moist to recharge it. There are worms and a nice mix of other plant trimmings and kitchen scraps also.
If any of you guys are interested in growing organically in soil there's a trilogy of books from a man named Jeff Lowenfels. Teaming With Nutrients, Teaming With Fungi, and Teaming with Microbes. All great, they really tell you what a plant needs to be successful, how this success happens in and around the plant, how important microbes and fungi are to a plant, and tons more. I don't grow organically, I'll never grow organically, but I learned a lot about plants and their relationship with their surroundings from these books.
If you're not a reader he's all over YouTube also. A lot of the discussions are the same, but I still watch once and a while. He did a 4th book on Autos, I have it, I read it... dont bother.
Also on YouTube, is a dude named Bruce Bugby. Another smart fucker, but targeting lighting for agriculture. He's also President or CEO of Quantum Sensors, a light meter company that puts out some interesting stuff. I bought one of his meters a little while ago and it's changed the way I grow.
Light meter