Since I planted Lemon Grass on my back patio, I have not noticed any gnats or mosquitoes hovering over me when I’m outside. Maybe it’s too early to tell. I would know more about it when the temperature drops down to a cooler one at the onset of Fall. I’m really very pleased at how my Lemon Grasses grow so well in containers. These are started from three single plants last winter, which I bought from an Asian grocery store. I chose ones that have visible intact bud at the base of the plant and stuck them in a flower base half filled with water. I kept them under flourescent light in my bathroom winter through spring. They developed roots and leaves all through these two seasons in my bathroom and even produce pups or young plants around them.
When the weather was consistently warm this year, around May or Jun, I transplanted them to flower pots. As you can see from the photo above that they almost fill up the pots that they are planted in. It is very sensitive to cold weather so it has to be placed inside a garage or unused room inside my house.
WARNING: THE LEAVES HAVE SHARP EDGE AND IT CAN CUT SKIN VERY EASILY.