It seems that the old is new again. And by "the old," we mean "weird 1960s fad of gardening-material-as-drug." Thanks to the Internet, teenagers are re-discovering something experts had thought was left far behind in the psychedelic era: Ingesting morning glory seeds in great quantities can lead to an LSD-like altered state. The emerging trend is hard to quantify because purchasing morning glory seeds is, of course, legal. But some garden shops have been keeping a closer eye on their inventory after seeing teenagers buy or steal large quantities of the flower seeds. "You think, 'Hmm,'" said Kristy Peterkin, whose family owns a hardware and garden store. Her teenage employees clued her into the reason the flower seeds were suddenly so popular. The Drug Enforcement Administration claims no knowledge of the psychedelic seeds, and a prominent drug researcher at the University of Michigan said he hadn't heard of the trend, either. "I'm afraid the kids are ahead of me in that case," he said.