This is a very under rated and under used plant. I have grown lemongrass for many years and keep harvesting new plants from the prolific flower heads which appear frequently. It is a drought tolerant plant and has its origins in India. It is a vigorous grower to 1.5 metres though I have had them grow taller than this. The flower heads are a pale mauve colour something like a feather duster. The plant dislikes being too wet, I never do anything to mine except cut it right back to about one foot high when it gets to big, also pull out any of the old dead woody looking stems then this will invigorate the new growth. Grow Lemon Grass with other grasses for a great effect, they are great for erosion control along banks. Once I have chopped it back I throw it into the chook pen, they thrash it around for a few weeks and break it down then I clean out the pen and throw it on the vegetable garden, great mulch and compost and rich in chook poo as well. Lemon grass is a good source of Vitamin a and the leaves are used in commercial teas. To make drinks pick a large handfull and screw up in your hands,place in large heatproof jug, pour over hot water and let it steep, drink it hot or cool it and have it as a refreshing summer cooler. When cooking rice place a few stems on top it gives a lovely fragrance. It is also used in soups and is popular in Asian cooking, in early times the oil was used in perfumes. Use a good quality cider vinegar and steep the lemon grass for 2 to 3 weeks then strain off the herbs when the vinegar is well flavoured. Pour the vinegar into clean dry bottles and seal with a cork, never a metal lid or the vinegar will react and turn it black. You can use the vinegar in dressings, mayonnaise and many other dishes.