Purple Lightning is an F-1 hybrid that we first created back in 1995 by crossing our Northern Lights #5 male with a female Purple Indica that had been cultivated in B.C for many years prior to that. Very similar to our N.L.#5 in structure but a bit quicker to finish and much stronger smelling. If you do not mind stronger smelling plants in your growroom and want short, high yielding plants that develop beautiful purple accents, then this one is a good choice.