How to tag? This is a plot of land empty from development with a number of trees, but scattered closer to the road (the natural wood ends halfway through as tagged). Given its unused state, the grass and scrub is overgrown, though it still *could* probably be considered landuse=grass with the scattered trees mapped separately. I tagged it tentatively as a scrub with surface=grass which I'm sure is the wrong tag. landuse=greenery seems wrong, as does a meadow, grassland, park, wood, and anything else I could find. 
Note: The other "undeveloped sites" (Merion Square, Williamson, Black Rock) are more densely tree covered so could be tagged as wood or forest.