Genetic Mutant Escape!

Genetically engineered grass has somehow escaped from the labs and taken root (literally) in the wild: Engineered grass found growing in wild But scientists are trying to calm the public:

"This is not a killer tomato, this is not the asparagus that ate Cleveland," said Norman Ellstrand, a geneticist and plant expert at the University of California, Riverside, referring to science fiction satire about mutant plants.

But how long before the Killer Tomatos and Cleveland-eating Asparagus are rising up from our supermarkets, huh Norman? Could you perhaps get me some early samples or seeds?