The old florist trick of dropping an aspirin or two in vases to keep roses, carnations, etc alive and fresh looking longer works almost the same for cloning. The major difference is the cut angle. Florist flowers kept in water with an aspirin or two a week sometimes will actually develop root structure, and a plant being a plant, in theory it should work, especially because marijuana is really a strong plant, it IS a weed afterall.I'm currently trying a clone in just water in a cup, been going for about 6 days now, no sign of roots yet, but the leaves are still upright with nice color and even what looks like very small new growth. Still no sign of root structure yet though, so I'm guessing it may work.