Parsley is on the list as being high in Vitamin K and is something to avoid, as even a tablespoon contains 62 mcg, which is a lot. If one is eating a consistent amount of greens each day, the parsley should be considered the high Vitamin K green for the day.It's best to avoid side dishes with other greens.arsley is on the list as being high in Vitamin K and is something to avoid, as even a tablespoon contains 62 mcg, which is a lot. If one is eating a consistent amount of greens each day, the parsley should be considered the high Vitamin K green for the day.