

In the book, 'triffids' are carnivorous plants able to uproot themselves, walk on three 'legs' and kill with a whip-like stinger.
Speculation by protagonist 'Bill Masen' is that the creatures were bio-engineered in the Soviet Union, with smuggled seeds scattered when a plane was shot down, trying to fly out of Russia. Triffids then began sprouting throughout the world, with their 'essential extracts' harvested as a natural supplement to vegetable and animal oils.
The result was a slew of Triffid farms...
