Only 8 weeks after the end of the 2004 sugar season, the track becomes very overgrown in the hot, moist, tropical climate. A short branch line near Silkwood, on the South Johnstone Mill's system. Grass and weeds grow so fast in this area. Home owners must mow their lawns/grass at least weekly from November till about April or they get out of hand. Grass wil grow up to 150mm (6") in a week.