Even a highly contaminated and mineral area like Harlem Station wasn't a sterelized place like we would like to believe.
Following historic photos, some vegetation found its way among the tracks and empty spaces surround the station. I tried to capture this appearance by using static grass. It's a mix of 3 colors, including straw yellow, greyish green and a Noch spring mix. In few area, grass was applied in two or three layers to add depth and variation.
While grass isn't a overwhelming presence on the layout, it does help to throw some randomness in that sea of dirt and concrete. I'm not sure if I'll add weeds and larger plants because old pictures mainly show very short grass here and there.