Can you derive sweet syrup from a corn stalk at home?

Try looking up "cane press" or "sorghum syrup". Corn stalks probably don't have the same amount of sugar as does cane sorghum, but I'm sure you could make syrup the same way. One reason you got the funky looking liquid was because you boiled the stalks whole when what you really needed to do was to squeeze the juice out first and boil it alone. Even sorghum juice has a green tinge to it initially and you need to skim the bitter tasting foam off as you boil it down.