I would love some lemongrass. Do you start it with rootstock? I don't know. All I know is that I would love to have some.
You can find lemon grass stalk at any Asian market. They sale in bundle of 5-6 stalks about 18inch long for a dollar or so. Stick them in a cup of water and you will see roots within a week. Wait for the root come out about 4" long then they readdy for potting. Good luck.
Please email me if you still want some