Cool, like the idea of a green room. Here's my current green project I'm trying. The dirt at my property in the front is dead, for a number of reasons I won't get into. It's supposed to be living, and full of worms, microbial life, bugs, nutrients, decomposing matter, etc. What I have is dirt which comes in many forms but difficult to grow anything in. I rototilled the front of my property and planted green manure, will tell you how it turns out. What's Green Manure? It's a plant mixture designed to ADD life and structure into your dead dirt and intended to be tilled into the soil to add life, nutrients, and increase your soil depth. They're plants that are meant to grow fast, grow in harsh environments, tilled easily, break down fast, and serve a specific purpose. Some plants in the green manure are chosen for deep roots, whose purpose is to get nutrients deep in your soil and bring them to the surface. Their deep roots also decay deep, which increases your top soil depth and attracts worms and bacteria. Other plants, are intended to grab nitrogen from the air and store it in their leaves/pods or be a legume which adds Nitrogen to your soil. Once tilled, they add some mass but their main purpose is to add Nitrogen in a form plants can use in your soil. Others are meant for mass and intended to add a lot of food for soil organisms to thrive on when tilled into the dirt and turn your soil into a metropolis for microbial and worm activity. There's a difference between Green Manure and compost. Compost recycles organic matter and nutrients one already has. Green Manure creates tons of organic matter one didn't have to begin with. Compost recycles 98% of the Nitrogen, Green Manure adds tons of Nitrogen. A compost pile is a lot of work flipping it, Green manure is easy. Broadcast the seed, several months later till, 3 weeks later use. I'll tell you how it goes in a few months. Growing green manure and tilling it in should be the same as adding 9-11 tons of cow manure per acre, but cost me only $28 in seed and the tiller I borrowed. It's going to look like crap and sure the neighbors will love it but, it was the cheapest thing I could do to try to bring life back to my dirt and improve it's composition.