In the meantime I wanted to put up some previous winners. And it is worth clicking on the links, since the judges dissect each haiku, teasing out its meaning and saying why it won.
2010:
Silverfish, tell me,
Darwin and Dostoevsky,
do they taste the same?
Martha Love, Gatsonia, NC
2008:
Two million flowers
The Ten-thousand mile harvest
Sweetens my pancake
Joel Caren, Raleigh, NC
And I finally got an ID on the strelitzia below, Ravenala madacasgariensis, which grows in a single plane.