This plant almost got ripped out as a weed this spring. It is now over 6ft tall and bloomed yellow flowers over a month ago. Pics show growth since early spring.
I looked into both your suggestions and neither one seems to grow nearly as tall as mine is. It is now literally 7ft tall and is rivalling my mountain ash tree.
Check out Yellow rocket - barbarea vulgaris. You must have great soil! It's been in my Ontario gardens, and so: http://www.omafra.gov.on.ca/english/crops/facts/ontweeds/yellow_rocket.htm (Ignore this ID - the flowers are similar, but not the leaves.)