i dont think they would be diffrent from being in space so you would need to breed killer genetics and send the only seeds to space and then grow them and it would be the only weed from outerspace..when anyone told the story of that strain they would say the seeds came from outerspace and thats the ultimate .thats copywritten .
In 1984, millions of tomato seeds were sent into space aboard Challenger Shuttle Mission STS-41C, as part of NASA's Long Duration Exposure Facility (LDEF) project. LDEF carried dozens of experiments from many different disciplines. The purpose of Park Seed's part of the experiment was to observe the effects of deep space on seeds. The cargo remained in Earth orbit for 5 years until 1989, when Columbia Shuttle Mission STS-32 retrieved the LDEF, and the seeds were returned to Earth. They were then distributed for use in science experiments. Ultimately, 132,000 experimental kits were sent to 64,000 teachers in more than 40,000 schools, involving more than 3 million students, throughout the United States and 30 foreign countries - one of the largest science experiments ever.
Participating students from elementary schools, high schools, and colleges were given at least 50 flight seeds and 50 control seeds (i.e., seeds that never left Earth). Students designed their own experiments and participated in testing their own hypotheses, making decisions, and collecting data. Students prepared detailed reports about their observations, and those results were compiled and published in 1991 by NASA's Educational Affairs Division as SEEDS: A Celebration of Science.
(In case you are wondering, the space seeds did not grow into mutant killer tomatoes. As it turns out, space is a terrific place to store your seeds-it's nice and dry, and cold enough to keep the seeds dormant. On the down side, though, getting to a space station is pretty inconvenient when you want to pick up a few seeds for your garden!)