i think it's called fox tail's, or fox tailing.. useally it's caused by to much N in flower.. heat stress or light leaks or
just the genetic traits of the plant.. nothing to worry about,IMO.. check for light leaks and make sure ur bulb aint to close..
z.
Both Nor-Cals and mine were grown outdoors so no light leaks or heat stress issues. The Arjans I grew is supposed to be a big yielder, up to 1,000 grams outdoors, so I doubt it was genetics either. I hardly got to feed them because of the rainy conditions this year. I'm just chocking it up to a bad growing season in general because of the adverse conditions.