I have been quite successful with growing lemongrass this time. I think the trick is to plant them in the ground with good soil. I have done so in pots due to renting but they did not do well. Finally there's good result :
And hooray I am absolutely stoked that I have success with ginger growing this year! It's difficult to grow them in Melbourne since I am in a temperate area. But the piece that I grew in a pot with good potting mix and composted manure did excellently! I harvested a piece recently and it was fat and fresh!
Since winter is fast approaching, I have designed and erected some form of protection over my tropical spice growing in the garden. I hope it works!