I fed it all to my goldfish last fall when I got rid of my planted tank. I can tell you I had 1.5wpg, used nutrafin plant-gro and a DIY co2 that was ridiculously over powered. All of my plants grew 1" a day or more. I would just chop off the top and replant it. They looked ugly, but the ones that were in there for weeks at a time grew hair like roots. They were not strong at all, not enough to actually root the plant but they were 100% roots. I never got the anacharis to root, but the cabomba and the hornwort rooted.
I should add that I had a ph of 8.2 and it was planted in fine limestone sand.