I planted lemongrass about 5 months ago and it's doing fantastic, however it still doesn't look anything like the lemongrass I'm used to buying in the store with the white part at the bottom: my lemongrass is green and leafy, with leaves up to 3 feet tall, and getting brown and slightly woodsy (feeling hard) toward the bottom. I'm not sure, if I were to pull out one of those shoots, whether they'd be some white part at the bottom that's currently hidden in the soil? Or maybe my lemongrass is not ready yet to be harvested? And if/when it is, how do you do it: do you just pull on one of the shoots until the whole thing comes out of the ground? Thanks!