I got a free one on Earth Day, and I planted it in a pot until it got a bit bigger (I'm scared someone will just mow it over!) In about 3 weeks, it's about doubled in size, as you can see from the photos below. It's added a ton of leaves to it since then.
I've been chatting back and forth with one of my readers, and he said that he planted his in a 5 gallon bucket and while he was away on a trip, his grew 3 full inches. Mine are in just 6 quart pots so maybe I need bigger pots!? I'll give it a couple more weeks before I decide.
In the meantime, I'm going to buy some miracle gro.