How long does a lemon grass plant live for?
Lemon Grass Lifespan
Certified GKH Gardening Expert
It depends on how it is cared for. Most clumping herbs, like lemon grass can live essentially forever if they get the proper care and are divided every few years to reinvigorate them. If you find that your lemon grass is dying out, especially from the center out, then it may be time to divide it. The dividing forces the plant to rejuvenate and grow itself, and bring it back to its previous vigor. Plus, you now have plants to share with friends as well.