Day of the Dandelion by Peter Pringle
Just finished this - the use of the humble dandelion's ability to asexually reproduce is grafted on a food crop and could change agriculture the world over. But will the selfless scientist and his colleagues patent it first or will the minions of the evil agri-business manage to steal and murder their way to the patent.
A bit of romp across Britain and Switzerland, lot of interesting plant info (be prepared to spend a lot of time with google) and a great anti-hero in Arthur Hemmings. I am hoping there will be more.
A great way to spend a snowy winter evening...