Eucalyptus it is! I notice that two of my friends on Goodreads have read it, our nominator Bookpossum and also issybird, and both rated it 5-stars so I'm looking forward to it. Interestingly the top six community rated reviews of it there are love or hate - four 5-star and two 1-star - so it seems to provoke intense reactions.
ETA -
The discussion thread is up.