When I first bought my cat grass, it started turning brown almost immediately. So instead of spraying it with a little water as instructed, I started dumping water on it by the gallons. That stopped the brown from getting worse... but had the side-effect of causing the grass to grow quite long. The cats didn't seem to mind. They'd happily lay in it and roll around in it. Which is exactly what I bought it for in the first place...

Now that it's too hot out and the cats don't like to go out, I should probably just let the grass die... but I'm genuinely curious to know how long I can keep it alive. Then, when it starts getting cooler at the end of August maybe I can order more and better know how to take care of it this time around?

Worth a shot.