I dunno about the clippings.. This is what I did:

Clipped, immediately stuck in distilled water. Used a blade to take a shaving around the stem, around the whole stem, and about an inch up it. Dipped in rooting powder. Stuck right into a shot glass sized seedling pot of 50/50 vermic and perlite. Took a party cup and misted the inside, and got a clear cup cap to go over it - misted that too. Dropped the clippings in, and at the lower part of the veg box (less light) in with the seedlings.

So, they sat in the covered cups, stayed moist, 80°, and were on 18/6 since 11/5.

They are still bright green, and they have noticeably grown, but zero root growth. The stem on one looks like it did the day I clipped it, and the stem on the other MIGHT have something.. Tiny white brain like growth on the end of it.. Nothing looking like a root but might be..

I dunno. My buddy said that using hydro on clippings works much better. He has a box with his clippings. He showed me one after seven days and it had a crazy spaghetti roots already.. I dunno. For now I guess I'll stick with the seeds.