also, ther was an article in MODEL RAILROADER years ago (unfortunately, I don't know the year, but the pictures they showed were in black-and-white, if that's any help) telling how to model reasonable-looking corn in HO, using some plastic, articial plant from a craft store. Unfortunately, though, each plant took a lot of modification, so it couldn't be used to model, say, an Iowa corn field.
The article was reprinted in one of Kalmbachs scenery books about 1989 or 90.
I think the book's called "SCENERY TIPS AND TECNICES"
"I have a message...Lt. Col....Henry Blakes plane...was shot down...over the Sea Of Japan...it spun in...there were no survivors".