Popular in many Asian dishes, this plant can be regrown at home. Lemongrass can propagate by simply putting the roots in a glass of water. It is best if the bulb is still mostly intact and there are some roots left. The bulb only needs about an inch of water in the cup and you should be able to see some growth within three weeks. In order to keep the plant healthy and prevent fungus, it is critical that you change the water regularly. Once the roots are about an inch or two, it can be planed in a garden.
Key Takeaways:
- Lemongrass propagates with a very high success rate from the cuttings you can buy at the grocery store.
- Propagating a lemongrass plant is as easy as placing the stalks in a glass of water and hoping for the best.
- Over the course of that time, the tops of the stalks should start to grow new leaves, and the bottoms of the bulbs should start to sprout new roots.
“Propagating a lemongrass plant is as easy as placing the stalks in a glass of water and hoping for the best. Lemongrass can be found in most Asian grocery stores as well as some larger supermarkets.”
http://www.gardeningknowhow.com/edible/herbs/lemongrass/regrowing-lemongrass-in-water.htm