The project is continuing to run, I have no idea when it will end, which I like the un-certainly of the schedule.
The sunflowers will either naturally return to the earth or the farmer at Johnson Farm will turn them under with his tractor, either way they go back to earth to be part of another crop of sunflowers in another season. That my friends is how life works. Birth, life, death, and re-birth. I have posted some on +google plus site with the hash tag #deadflowersociety